31315534322 has 6 divisors (see below), whose sum is σ = 46973676879. Its totient is φ = 15657642030.

The previous prime is 31315534321. The next prime is 31315534331. The reversal of 31315534322 is 22343551313.

It can be written as a sum of positive squares in only one way, i.e., 15657767161 + 15657767161 = 125131^2 + 125131^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=125131.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31315534321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 187697 + ... + 312827.

Almost surely, 2^31315534322 is an apocalyptic number.

31315534322 is a deficient number, since it is larger than the sum of its proper divisors (15658142557).

31315534322 is an frugal number, since it uses more digits than its factorization.

31315534322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250264 (or 125133 counting only the distinct ones).

The product of its digits is 32400, while the sum is 32.

Multiplying 31315534322 by its sum of digits (32), we get a square (1002097098304 = 1001048²).

The spelling of 31315534322 in words is "thirty-one billion, three hundred fifteen million, five hundred thirty-four thousand, three hundred twenty-two".