31144232432 has 30 divisors (see below), whose sum is σ = 63685006488. Its totient is φ = 14752528416.

The previous prime is 31144232411. The next prime is 31144232443. The reversal of 31144232432 is 23423244113.

It is a junction number, because it is equal to n+sod(n) for n = 31144232395 and 31144232404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2690228 + ... + 2701779.

Almost surely, 2^31144232432 is an apocalyptic number.

It is an amenable number.

31144232432 is an abundant number, since it is smaller than the sum of its proper divisors (32540774056).

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

31144232432 is a wasteful number, since it uses less digits than its factorization.

31144232432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392053 (or 5392028 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

Adding to 31144232432 its reverse (23423244113), we get a palindrome (54567476545).

The spelling of 31144232432 in words is "thirty-one billion, one hundred forty-four million, two hundred thirty-two thousand, four hundred thirty-two".