31322110312 has 8 divisors (see below), whose sum is σ = 58728956850. Its totient is φ = 15661055152.

The previous prime is 31322110249. The next prime is 31322110357. The reversal of 31322110312 is 21301122313.

It can be written as a sum of positive squares in only one way, i.e., 18288234756 + 13033875556 = 135234^2 + 114166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 31322110312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1957631887 + ... + 1957631902.

Almost surely, 2^31322110312 is an apocalyptic number.

It is an amenable number.

31322110312 is a deficient number, since it is larger than the sum of its proper divisors (27406846538).

31322110312 is a wasteful number, since it uses less digits than its factorization.

31322110312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3915263795 (or 3915263791 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31322110312 its reverse (21301122313), we get a palindrome (52623232625).

The spelling of 31322110312 in words is "thirty-one billion, three hundred twenty-two million, one hundred ten thousand, three hundred twelve".