231545401152432 has 40 divisors (see below), whose sum is σ = 601195292864496. Its totient is φ = 76790014592256.

The previous prime is 231545401152431. The next prime is 231545401152437. The reversal of 231545401152432 is 234251104545132.

231545401152432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231545401152432² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231545401152431) 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, 12243296443 + ... + 12243315354.

Almost surely, 2^{231545401152432} is an apocalyptic number.

It is an amenable number.

231545401152432 is an abundant number, since it is smaller than the sum of its proper divisors (369649891712064).

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

231545401152432 is a wasteful number, since it uses less digits than its factorization.

231545401152432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24486612005 (or 24486611999 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

Adding to 231545401152432 its reverse (234251104545132), we get a palindrome (465796505697564).

The spelling of 231545401152432 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred one million, one hundred fifty-two thousand, four hundred thirty-two".