31213322332 has 6 divisors (see below), whose sum is σ = 54623314088. Its totient is φ = 15606661164.

The previous prime is 31213322317. The next prime is 31213322339. The reversal of 31213322332 is 23322331213.

It is a junction number, because it is equal to n+sod(n) for n = 31213322297 and 31213322306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213322339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3901665288 + ... + 3901665295.

Almost surely, 2^31213322332 is an apocalyptic number.

It is an amenable number.

31213322332 is a deficient number, since it is larger than the sum of its proper divisors (23409991756).

31213322332 is a wasteful number, since it uses less digits than its factorization.

31213322332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7803330587 (or 7803330585 counting only the distinct ones).

The product of its digits is 3888, while the sum is 25.

Adding to 31213322332 its reverse (23322331213), we get a palindrome (54535653545).

The spelling of 31213322332 in words is "thirty-one billion, two hundred thirteen million, three hundred twenty-two thousand, three hundred thirty-two".