31431612525953 has 2 divisors, whose sum is σ = 31431612525954. Its totient is φ = 31431612525952.

The previous prime is 31431612525871. The next prime is 31431612526081. The reversal of 31431612525953 is 35952521613413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31407696522049 + 23916003904 = 5604257^2 + 154648^2 .

It is a cyclic number.

It is not a de Polignac number, because 31431612525953 - 2⁸ = 31431612525697 is a prime.

It is not a weakly prime, because it can be changed into another prime (31431615525953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715806262976 + 15715806262977.

It is an arithmetic number, because the mean of its divisors is an integer number (15715806262977).

Almost surely, 2^{31431612525953} is an apocalyptic number.

It is an amenable number.

31431612525953 is a deficient number, since it is larger than the sum of its proper divisors (1).

31431612525953 is an equidigital number, since it uses as much as digits as its factorization.

31431612525953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916000, while the sum is 50.

The spelling of 31431612525953 in words is "thirty-one trillion, four hundred thirty-one billion, six hundred twelve million, five hundred twenty-five thousand, nine hundred fifty-three".