31361623154459 has 32 divisors (see below), whose sum is σ = 36733106765376. Its totient is φ = 26505699102720.

The previous prime is 31361623154429. The next prime is 31361623154479. The reversal of 31361623154459 is 95445132616313.

It is a cyclic number.

It is not a de Polignac number, because 31361623154459 - 2²⁰ = 31361622105883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31361623154459.

It is not an unprimeable number, because it can be changed into a prime (31361623154429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51712424 + ... + 52315370.

It is an arithmetic number, because the mean of its divisors is an integer number (1147909586418).

Almost surely, 2^{31361623154459} is an apocalyptic number.

31361623154459 is a deficient number, since it is larger than the sum of its proper divisors (5371483610917).

31361623154459 is a wasteful number, since it uses less digits than its factorization.

31361623154459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609375.

The product of its digits is 6998400, while the sum is 53.

The spelling of 31361623154459 in words is "thirty-one trillion, three hundred sixty-one billion, six hundred twenty-three million, one hundred fifty-four thousand, four hundred fifty-nine".