31361452665941 has 2 divisors, whose sum is σ = 31361452665942. Its totient is φ = 31361452665940.

The previous prime is 31361452665931. The next prime is 31361452665943. The reversal of 31361452665941 is 14956625416313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30710671641841 + 650781024100 = 5541721^2 + 806710^2 .

It is a cyclic number.

It is not a de Polignac number, because 31361452665941 - 2¹⁴ = 31361452649557 is a prime.

It is a super-2 number, since 2×31361452665941² (a number of 28 digits) contains 22 as substring.

Together with 31361452665943, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31361452665943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15680726332970 + 15680726332971.

It is an arithmetic number, because the mean of its divisors is an integer number (15680726332971).

Almost surely, 2^{31361452665941} is an apocalyptic number.

It is an amenable number.

31361452665941 is a deficient number, since it is larger than the sum of its proper divisors (1).

31361452665941 is an equidigital number, since it uses as much as digits as its factorization.

31361452665941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13996800, while the sum is 56.

The spelling of 31361452665941 in words is "thirty-one trillion, three hundred sixty-one billion, four hundred fifty-two million, six hundred sixty-five thousand, nine hundred forty-one".