31971077041 has 2 divisors, whose sum is σ = 31971077042. Its totient is φ = 31971077040.

The previous prime is 31971076967. The next prime is 31971077087. The reversal of 31971077041 is 14077017913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28943876641 + 3027200400 = 170129^2 + 55020^2 .

It is a cyclic number.

It is not a de Polignac number, because 31971077041 - 2¹⁹ = 31970552753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31971076985 and 31971077003.

It is not a weakly prime, because it can be changed into another prime (31971077741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15985538520 + 15985538521.

It is an arithmetic number, because the mean of its divisors is an integer number (15985538521).

Almost surely, 2^31971077041 is an apocalyptic number.

It is an amenable number.

31971077041 is a deficient number, since it is larger than the sum of its proper divisors (1).

31971077041 is an equidigital number, since it uses as much as digits as its factorization.

31971077041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37044, while the sum is 40.

The spelling of 31971077041 in words is "thirty-one billion, nine hundred seventy-one million, seventy-seven thousand, forty-one".