31231122032 has 40 divisors (see below), whose sum is σ = 66121660800. Its totient is φ = 14172217280.

The previous prime is 31231122029. The next prime is 31231122053. The reversal of 31231122032 is 23022113213.

It is a junction number, because it is equal to n+sod(n) for n = 31231121995 and 31231122013.

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, 42698 + ... + 253545.

It is an arithmetic number, because the mean of its divisors is an integer number (1653041520).

Almost surely, 2^31231122032 is an apocalyptic number.

It is an amenable number.

31231122032 is an abundant number, since it is smaller than the sum of its proper divisors (34890538768).

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

31231122032 is a wasteful number, since it uses less digits than its factorization.

31231122032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296861 (or 296855 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31231122032 its reverse (23022113213), we get a palindrome (54253235245).

The spelling of 31231122032 in words is "thirty-one billion, two hundred thirty-one million, one hundred twenty-two thousand, thirty-two".