31332345432 has 32 divisors (see below), whose sum is σ = 78339538800. Its totient is φ = 10442958464.

The previous prime is 31332345413. The next prime is 31332345469. The reversal of 31332345432 is 23454323313.

It is a junction number, because it is equal to n+sod(n) for n = 31332345393 and 31332345402.

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, 164794 + ... + 299702.

Almost surely, 2^31332345432 is an apocalyptic number.

It is an amenable number.

31332345432 is an abundant number, since it is smaller than the sum of its proper divisors (47007193368).

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

31332345432 is a wasteful number, since it uses less digits than its factorization.

31332345432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144595 (or 144591 counting only the distinct ones).

The product of its digits is 77760, while the sum is 33.

Adding to 31332345432 its reverse (23454323313), we get a palindrome (54786668745).

The spelling of 31332345432 in words is "thirty-one billion, three hundred thirty-two million, three hundred forty-five thousand, four hundred thirty-two".