31074293161 has 2 divisors, whose sum is σ = 31074293162. Its totient is φ = 31074293160.

The previous prime is 31074293153. The next prime is 31074293189. The reversal of 31074293161 is 16139247013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28506945600 + 2567347561 = 168840^2 + 50669^2 .

It is a cyclic number.

It is not a de Polignac number, because 31074293161 - 2³ = 31074293153 is a prime.

It is a super-2 number, since 2×31074293161² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31074293161.

It is not a weakly prime, because it can be changed into another prime (31074293141) 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, 15537146580 + 15537146581.

It is an arithmetic number, because the mean of its divisors is an integer number (15537146581).

Almost surely, 2^31074293161 is an apocalyptic number.

It is an amenable number.

31074293161 is a deficient number, since it is larger than the sum of its proper divisors (1).

31074293161 is an equidigital number, since it uses as much as digits as its factorization.

31074293161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 31074293161 in words is "thirty-one billion, seventy-four million, two hundred ninety-three thousand, one hundred sixty-one".