31156160201 has 2 divisors, whose sum is σ = 31156160202. Its totient is φ = 31156160200.

The previous prime is 31156160183. The next prime is 31156160261. The reversal of 31156160201 is 10206165113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31028470201 + 127690000 = 176149^2 + 11300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31156160201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31156160261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15578080100 + 15578080101.

It is an arithmetic number, because the mean of its divisors is an integer number (15578080101).

Almost surely, 2^31156160201 is an apocalyptic number.

It is an amenable number.

31156160201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31156160201 is an equidigital number, since it uses as much as digits as its factorization.

31156160201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 31156160201 in words is "thirty-one billion, one hundred fifty-six million, one hundred sixty thousand, two hundred one".