23131013620 has 96 divisors (see below), whose sum is σ = 60424310016. Its totient is φ = 7307520000.

The previous prime is 23131013561. The next prime is 23131013621. The reversal of 23131013620 is 2631013132.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 23131013591 and 23131013600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131013621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189256 + ... + 286495.

It is an arithmetic number, because the mean of its divisors is an integer number (629419896).

Almost surely, 2^23131013620 is an apocalyptic number.

23131013620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131013620 is an abundant number, since it is smaller than the sum of its proper divisors (37293296396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23131013620 is a wasteful number, since it uses less digits than its factorization.

23131013620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475801 (or 475799 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 23131013620 its reverse (2631013132), we get a palindrome (25762026752).

The spelling of 23131013620 in words is "twenty-three billion, one hundred thirty-one million, thirteen thousand, six hundred twenty".