31032213332 has 12 divisors (see below), whose sum is σ = 55630919316. Its totient is φ = 15137664960.

The previous prime is 31032213281. The next prime is 31032213347. The reversal of 31032213332 is 23331223013.

It can be written as a sum of positive squares in 2 ways, for example, as 3224649796 + 27807563536 = 56786^2 + 166756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31032213298 and 31032213307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94610243 + ... + 94610570.

It is an arithmetic number, because the mean of its divisors is an integer number (4635909943).

Almost surely, 2^31032213332 is an apocalyptic number.

It is an amenable number.

31032213332 is a deficient number, since it is larger than the sum of its proper divisors (24598705984).

31032213332 is a wasteful number, since it uses less digits than its factorization.

31032213332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189220858 (or 189220856 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31032213332 its reverse (23331223013), we get a palindrome (54363436345).

The spelling of 31032213332 in words is "thirty-one billion, thirty-two million, two hundred thirteen thousand, three hundred thirty-two".