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20120230441031 = 72874318634433
BaseRepresentation
bin1001001001100100110110…
…01100000011000001000111
32122020110211110020201211012
410210302123030003001013
510114122212443103111
6110443034541432435
74144432031635010
oct444623314030107
978213743221735
1020120230441031
116457a3a606996
12230b52856b71b
13b2c439153036
144d7b7802c007
1524d5901aa48b
hex124c9b303047

20120230441031 has 4 divisors (see below), whose sum is σ = 22994549075472. Its totient is φ = 17245911806592.

The previous prime is 20120230441007. The next prime is 20120230441037. The reversal of 20120230441031 is 13014403202102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20120230441031 - 218 = 20120230178887 is a prime.

It is a super-2 number, since 2×201202304410312 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120230440988 and 20120230441006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120230441037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1437159317210 + ... + 1437159317223.

It is an arithmetic number, because the mean of its divisors is an integer number (5748637268868).

Almost surely, 220120230441031 is an apocalyptic number.

20120230441031 is a deficient number, since it is larger than the sum of its proper divisors (2874318634441).

20120230441031 is an equidigital number, since it uses as much as digits as its factorization.

20120230441031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874318634440.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20120230441031 its reverse (13014403202102), we get a palindrome (33134633643133).

The spelling of 20120230441031 in words is "twenty trillion, one hundred twenty billion, two hundred thirty million, four hundred forty-one thousand, thirty-one".

Divisors: 1 7 2874318634433 20120230441031