31240440511532 has 24 divisors (see below), whose sum is σ = 63336783506976. Its totient is φ = 13205352544128.

The previous prime is 31240440511529. The next prime is 31240440511583. The reversal of 31240440511532 is 23511504404213.

It is a junction number, because it is equal to n+sod(n) for n = 31240440511492 and 31240440511501.

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, 7641984383 + ... + 7641988470.

It is an arithmetic number, because the mean of its divisors is an integer number (2639032646124).

Almost surely, 2^{31240440511532} is an apocalyptic number.

It is an amenable number.

31240440511532 is an abundant number, since it is smaller than the sum of its proper divisors (32096342995444).

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

31240440511532 is a wasteful number, since it uses less digits than its factorization.

31240440511532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15283972937 (or 15283972935 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 31240440511532 its reverse (23511504404213), we get a palindrome (54751944915745).

The spelling of 31240440511532 in words is "thirty-one trillion, two hundred forty billion, four hundred forty million, five hundred eleven thousand, five hundred thirty-two".