31536368953 has 2 divisors, whose sum is σ = 31536368954. Its totient is φ = 31536368952.

The previous prime is 31536368923. The next prime is 31536368957. The reversal of 31536368953 is 35986363513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25801033129 + 5735335824 = 160627^2 + 75732^2 .

It is an emirp because it is prime and its reverse (35986363513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31536368953 - 2³³ = 22946434361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31536368953.

It is not a weakly prime, because it can be changed into another prime (31536368957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15768184476 + 15768184477.

It is an arithmetic number, because the mean of its divisors is an integer number (15768184477).

Almost surely, 2^31536368953 is an apocalyptic number.

It is an amenable number.

31536368953 is a deficient number, since it is larger than the sum of its proper divisors (1).

31536368953 is an equidigital number, since it uses as much as digits as its factorization.

31536368953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5248800, while the sum is 52.

The spelling of 31536368953 in words is "thirty-one billion, five hundred thirty-six million, three hundred sixty-eight thousand, nine hundred fifty-three".