31964285113 has 2 divisors, whose sum is σ = 31964285114. Its totient is φ = 31964285112.

The previous prime is 31964285063. The next prime is 31964285117. The reversal of 31964285113 is 31158246913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31107435129 + 856849984 = 176373^2 + 29272^2 .

It is a cyclic number.

It is not a de Polignac number, because 31964285113 - 2²⁵ = 31930730681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31964285113.

It is not a weakly prime, because it can be changed into another prime (31964285117) 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 as a sum of consecutive naturals, namely, 15982142556 + 15982142557.

It is an arithmetic number, because the mean of its divisors is an integer number (15982142557).

Almost surely, 2^31964285113 is an apocalyptic number.

It is an amenable number.

31964285113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31964285113 is an equidigital number, since it uses as much as digits as its factorization.

31964285113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The spelling of 31964285113 in words is "thirty-one billion, nine hundred sixty-four million, two hundred eighty-five thousand, one hundred thirteen".