31213441032 has 64 divisors (see below), whose sum is σ = 79680559680. Its totient is φ = 10186970112.

The previous prime is 31213441019. The next prime is 31213441043. The reversal of 31213441032 is 23014431213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 31213440993 and 31213441011.

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, 175003 + ... + 305045.

It is an arithmetic number, because the mean of its divisors is an integer number (1245008745).

Almost surely, 2^31213441032 is an apocalyptic number.

It is an amenable number.

31213441032 is an abundant number, since it is smaller than the sum of its proper divisors (48467118648).

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

31213441032 is a wasteful number, since it uses less digits than its factorization.

31213441032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130262 (or 130258 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31213441032 its reverse (23014431213), we get a palindrome (54227872245).

The spelling of 31213441032 in words is "thirty-one billion, two hundred thirteen million, four hundred forty-one thousand, thirty-two".