31156352041 has 2 divisors, whose sum is σ = 31156352042. Its totient is φ = 31156352040.

The previous prime is 31156352027. The next prime is 31156352063. The reversal of 31156352041 is 14025365113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31127192041 + 29160000 = 176429^2 + 5400^2 .

It is an emirp because it is prime and its reverse (14025365113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31156352041 - 2²⁵ = 31122797609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31156351994 and 31156352012.

It is not a weakly prime, because it can be changed into another prime (31156352021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15578176020 + 15578176021.

It is an arithmetic number, because the mean of its divisors is an integer number (15578176021).

Almost surely, 2^31156352041 is an apocalyptic number.

It is an amenable number.

31156352041 is a deficient number, since it is larger than the sum of its proper divisors (1).

31156352041 is an equidigital number, since it uses as much as digits as its factorization.

31156352041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 31156352041 in words is "thirty-one billion, one hundred fifty-six million, three hundred fifty-two thousand, forty-one".