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3123220023 = 3271131145381
BaseRepresentation
bin1011101000101000…
…1000111000110111
322001122220000102200
42322022020320313
522344021020043
61233525235543
7140252634510
oct27212107067
98048800380
103123220023
111362a81480
12731b62bb3
133aa097cb1
14218b1da07
151342d37d3
hexba288e37

3123220023 has 48 divisors (see below), whose sum is σ = 5805975552. Its totient is φ = 1570104000.

The previous prime is 3123220013. The next prime is 3123220063. The reversal of 3123220023 is 3200223213.

It is a happy number.

3123220023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3123220023 - 214 = 3123203639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3123219978 and 3123220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123220003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51208 + ... + 94173.

It is an arithmetic number, because the mean of its divisors is an integer number (120957824).

Almost surely, 23123220023 is an apocalyptic number.

3123220023 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3123220023 is a deficient number, since it is larger than the sum of its proper divisors (2682755529).

3123220023 is a wasteful number, since it uses less digits than its factorization.

3123220023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145436 (or 145433 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 3123220023 is about 55885.7765715034. The cubic root of 3123220023 is about 1461.7312332228.

Adding to 3123220023 its reverse (3200223213), we get a palindrome (6323443236).

The spelling of 3123220023 in words is "three billion, one hundred twenty-three million, two hundred twenty thousand, twenty-three".

Divisors: 1 3 7 9 11 21 31 33 63 77 93 99 217 231 279 341 651 693 1023 1953 2387 3069 7161 21483 145381 436143 1017667 1308429 1599191 3053001 4506811 4797573 9159003 11194337 13520433 14392719 31547677 33583011 40561299 49574921 94643031 100749033 148724763 283929093 347024447 446174289 1041073341 3123220023