31240443042032 has 80 divisors (see below), whose sum is σ = 69244352244480. Its totient is φ = 13375395910656.

The previous prime is 31240443042007. The next prime is 31240443042079. The reversal of 31240443042032 is 23024034404213.

It is a self number, because there is not a number n which added to its sum of digits gives 31240443042032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541278008 + ... + 541335720.

It is an arithmetic number, because the mean of its divisors is an integer number (865554403056).

Almost surely, 2^{31240443042032} is an apocalyptic number.

It is an amenable number.

31240443042032 is an abundant number, since it is smaller than the sum of its proper divisors (38003909202448).

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

31240443042032 is a wasteful number, since it uses less digits than its factorization.

31240443042032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62470 (or 62464 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 31240443042032 its reverse (23024034404213), we get a palindrome (54264477446245).

The spelling of 31240443042032 in words is "thirty-one trillion, two hundred forty billion, four hundred forty-three million, forty-two thousand, thirty-two".