31112204356 has 24 divisors (see below), whose sum is σ = 59207172696. Its totient is φ = 14245332480.

The previous prime is 31112204269. The next prime is 31112204401. The reversal of 31112204356 is 65340221113.

It can be written as a sum of positive squares in 4 ways, for example, as 12992352256 + 18119852100 = 113984^2 + 134610^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6180355 + ... + 6185386.

It is an arithmetic number, because the mean of its divisors is an integer number (2466965529).

Almost surely, 2^31112204356 is an apocalyptic number.

It is an amenable number.

31112204356 is a deficient number, since it is larger than the sum of its proper divisors (28094968340).

31112204356 is a wasteful number, since it uses less digits than its factorization.

31112204356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12365799 (or 12365797 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 31112204356 its reverse (65340221113), we get a palindrome (96452425469).

The spelling of 31112204356 in words is "thirty-one billion, one hundred twelve million, two hundred four thousand, three hundred fifty-six".