31254100457 has 2 divisors, whose sum is σ = 31254100458. Its totient is φ = 31254100456.

The previous prime is 31254100447. The next prime is 31254100511. The reversal of 31254100457 is 75400145213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27887664016 + 3366436441 = 166996^2 + 58021^2 .

It is an emirp because it is prime and its reverse (75400145213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31254100457 - 2⁶ = 31254100393 is a prime.

It is not a weakly prime, because it can be changed into another prime (31254100417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15627050228 + 15627050229.

It is an arithmetic number, because the mean of its divisors is an integer number (15627050229).

Almost surely, 2^31254100457 is an apocalyptic number.

It is an amenable number.

31254100457 is a deficient number, since it is larger than the sum of its proper divisors (1).

31254100457 is an equidigital number, since it uses as much as digits as its factorization.

31254100457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 31254100457 in words is "thirty-one billion, two hundred fifty-four million, one hundred thousand, four hundred fifty-seven".