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3123211413 = 37148724353
BaseRepresentation
bin1011101000101000…
…0110110010010101
322001122212120121210
42322022012302111
522344020231123
61233525132033
7140252600430
oct27212066225
98048776553
103123211413
111362a75a63
12731b5a019
133aa0940ba
14218b1a817
151342d0e93
hexba286c95

3123211413 has 8 divisors (see below), whose sum is σ = 4759179328. Its totient is φ = 1784692224.

The previous prime is 3123211397. The next prime is 3123211439. The reversal of 3123211413 is 3141123213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3123211413 - 24 = 3123211397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 148724353 = 3123211413 / (3 + 1 + 2 + 3 + 2 + 1 + 1 + 4 + 1 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3123211413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123211213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74362156 + ... + 74362197.

It is an arithmetic number, because the mean of its divisors is an integer number (594897416).

Almost surely, 23123211413 is an apocalyptic number.

It is an amenable number.

3123211413 is a deficient number, since it is larger than the sum of its proper divisors (1635967915).

3123211413 is a wasteful number, since it uses less digits than its factorization.

3123211413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148724363.

The product of its digits is 432, while the sum is 21.

The square root of 3123211413 is about 55885.6995393276. The cubic root of 3123211413 is about 1461.7298900025.

Adding to 3123211413 its reverse (3141123213), we get a palindrome (6264334626).

The spelling of 3123211413 in words is "three billion, one hundred twenty-three million, two hundred eleven thousand, four hundred thirteen".

Divisors: 1 3 7 21 148724353 446173059 1041070471 3123211413