23431134402 has 96 divisors (see below), whose sum is σ = 57772915200. Its totient is φ = 6808703616.

The previous prime is 23431134373. The next prime is 23431134409. The reversal of 23431134402 is 20443113432.

23431134402 is a `hidden beast` number, since 2 + 3 + 4 + 311 + 344 + 0 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (23431134409) 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, 397624 + ... + 452732.

It is an arithmetic number, because the mean of its divisors is an integer number (601801200).

Almost surely, 2^23431134402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23431134402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28886457600).

23431134402 is an abundant number, since it is smaller than the sum of its proper divisors (34341780798).

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

23431134402 is a wasteful number, since it uses less digits than its factorization.

23431134402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55232 (or 55229 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 23431134402 its reverse (20443113432), we get a palindrome (43874247834).

The spelling of 23431134402 in words is "twenty-three billion, four hundred thirty-one million, one hundred thirty-four thousand, four hundred two".