31011605396 has 12 divisors (see below), whose sum is σ = 54273897300. Its totient is φ = 15504777600.

The previous prime is 31011605381. The next prime is 31011605399. The reversal of 31011605396 is 69350611013.

It can be written as a sum of positive squares in 2 ways, for example, as 28500192400 + 2511412996 = 168820^2 + 50114^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31011605399) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 186071 + ... + 310878.

It is an arithmetic number, because the mean of its divisors is an integer number (4522824775).

Almost surely, 2^31011605396 is an apocalyptic number.

It is an amenable number.

31011605396 is a deficient number, since it is larger than the sum of its proper divisors (23262291904).

31011605396 is a wasteful number, since it uses less digits than its factorization.

31011605396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512554 (or 512552 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 35.

The spelling of 31011605396 in words is "thirty-one billion, eleven million, six hundred five thousand, three hundred ninety-six".