31952099161 has 2 divisors, whose sum is σ = 31952099162. Its totient is φ = 31952099160.

The previous prime is 31952099147. The next prime is 31952099243. The reversal of 31952099161 is 16199025913.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30430709136 + 1521390025 = 174444^2 + 39005^2 .

It is a cyclic number.

It is not a de Polignac number, because 31952099161 - 2¹¹ = 31952097113 is a prime.

It is not a weakly prime, because it can be changed into another prime (31952199161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15976049580 + 15976049581.

It is an arithmetic number, because the mean of its divisors is an integer number (15976049581).

Almost surely, 2^31952099161 is an apocalyptic number.

It is an amenable number.

31952099161 is a deficient number, since it is larger than the sum of its proper divisors (1).

31952099161 is an equidigital number, since it uses as much as digits as its factorization.

31952099161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131220, while the sum is 46.

The spelling of 31952099161 in words is "thirty-one billion, nine hundred fifty-two million, ninety-nine thousand, one hundred sixty-one".