23131232121432 has 32 divisors (see below), whose sum is σ = 57828198380400. Its totient is φ = 7710394963584.

The previous prime is 23131232121401. The next prime is 23131232121467. The reversal of 23131232121432 is 23412123213132.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 23131232121432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21497938 + ... + 22548254.

Almost surely, 2^{23131232121432} is an apocalyptic number.

It is an amenable number.

23131232121432 is an abundant number, since it is smaller than the sum of its proper divisors (34696966258968).

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

23131232121432 is a wasteful number, since it uses less digits than its factorization.

23131232121432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967955 (or 1967951 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

Adding to 23131232121432 its reverse (23412123213132), we get a palindrome (46543355334564).

The spelling of 23131232121432 in words is "twenty-three trillion, one hundred thirty-one billion, two hundred thirty-two million, one hundred twenty-one thousand, four hundred thirty-two".