31200013300397 has 2 divisors, whose sum is σ = 31200013300398. Its totient is φ = 31200013300396.

The previous prime is 31200013300331. The next prime is 31200013300507. The reversal of 31200013300397 is 79300331000213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25826917116361 + 5373096184036 = 5082019^2 + 2317994^2 .

It is a cyclic number.

It is not a de Polignac number, because 31200013300397 - 2¹⁰ = 31200013299373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31200013300327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15600006650198 + 15600006650199.

It is an arithmetic number, because the mean of its divisors is an integer number (15600006650199).

Almost surely, 2^{31200013300397} is an apocalyptic number.

It is an amenable number.

31200013300397 is a deficient number, since it is larger than the sum of its proper divisors (1).

31200013300397 is an equidigital number, since it uses as much as digits as its factorization.

31200013300397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 32.

The spelling of 31200013300397 in words is "thirty-one trillion, two hundred billion, thirteen million, three hundred thousand, three hundred ninety-seven".