31322002312 has 16 divisors (see below), whose sum is σ = 58826808000. Its totient is φ = 15634853520.

The previous prime is 31322002279. The next prime is 31322002321. The reversal of 31322002312 is 21320022313.

It is a self number, because there is not a number n which added to its sum of digits gives 31322002312.

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, 3263364 + ... + 3272947.

It is an arithmetic number, because the mean of its divisors is an integer number (3676675500).

Almost surely, 2^31322002312 is an apocalyptic number.

It is an amenable number.

31322002312 is a deficient number, since it is larger than the sum of its proper divisors (27504805688).

31322002312 is a wasteful number, since it uses less digits than its factorization.

31322002312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6536916 (or 6536912 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31322002312 its reverse (21320022313), we get a palindrome (52642024625).

The spelling of 31322002312 in words is "thirty-one billion, three hundred twenty-two million, two thousand, three hundred twelve".