31696105156 has 9 divisors (see below), whose sum is σ = 55468807149. Its totient is φ = 15847874544.

The previous prime is 31696105109. The next prime is 31696105163. The reversal of 31696105156 is 65150169613.

The square root of 31696105156 is 178034.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10150562500 + 21545542656 = 100750^2 + 146784^2 .

It is a Duffinian number.

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 2 ways as a sum of consecutive naturals, for example, 311560 + ... + 400576.

Almost surely, 2^31696105156 is an apocalyptic number.

31696105156 is the 178034-th square number.

It is an amenable number.

31696105156 is a deficient number, since it is larger than the sum of its proper divisors (23772701993).

31696105156 is an frugal number, since it uses more digits than its factorization.

31696105156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178038 (or 89019 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 43.

The spelling of 31696105156 in words is "thirty-one billion, six hundred ninety-six million, one hundred five thousand, one hundred fifty-six".