31504405253399 has 16 divisors (see below), whose sum is σ = 34246404950688. Its totient is φ = 28807941378432.

The previous prime is 31504405253359. The next prime is 31504405253441. The reversal of 31504405253399 is 99335250440513.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31504405253399 - 2⁸ = 31504405253143 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 31504405253399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31504405253359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32004749 + ... + 32974425.

It is an arithmetic number, because the mean of its divisors is an integer number (2140400309418).

Almost surely, 2^{31504405253399} is an apocalyptic number.

31504405253399 is a deficient number, since it is larger than the sum of its proper divisors (2741999697289).

31504405253399 is a wasteful number, since it uses less digits than its factorization.

31504405253399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993154.

The product of its (nonzero) digits is 8748000, while the sum is 53.

The spelling of 31504405253399 in words is "thirty-one trillion, five hundred four billion, four hundred five million, two hundred fifty-three thousand, three hundred ninety-nine".