31350307253 has 2 divisors, whose sum is σ = 31350307254. Its totient is φ = 31350307252.

The previous prime is 31350307193. The next prime is 31350307267. The reversal of 31350307253 is 35270305313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29702109649 + 1648197604 = 172343^2 + 40598^2 .

It is a cyclic number.

It is not a de Polignac number, because 31350307253 - 2²⁸ = 31081871797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31350307273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15675153626 + 15675153627.

It is an arithmetic number, because the mean of its divisors is an integer number (15675153627).

Almost surely, 2^31350307253 is an apocalyptic number.

It is an amenable number.

31350307253 is a deficient number, since it is larger than the sum of its proper divisors (1).

31350307253 is an equidigital number, since it uses as much as digits as its factorization.

31350307253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28350, while the sum is 32.

The spelling of 31350307253 in words is "thirty-one billion, three hundred fifty million, three hundred seven thousand, two hundred fifty-three".