31325400436457 has 2 divisors, whose sum is σ = 31325400436458. Its totient is φ = 31325400436456.

The previous prime is 31325400436441. The next prime is 31325400436513. The reversal of 31325400436457 is 75463400452313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23154612581776 + 8170787854681 = 4811924^2 + 2858459^2 .

It is a cyclic number.

It is not a de Polignac number, because 31325400436457 - 2⁴ = 31325400436441 is a prime.

It is not a weakly prime, because it can be changed into another prime (31325400439457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15662700218228 + 15662700218229.

It is an arithmetic number, because the mean of its divisors is an integer number (15662700218229).

Almost surely, 2^{31325400436457} is an apocalyptic number.

It is an amenable number.

31325400436457 is a deficient number, since it is larger than the sum of its proper divisors (1).

31325400436457 is an equidigital number, since it uses as much as digits as its factorization.

31325400436457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 47.

The spelling of 31325400436457 in words is "thirty-one trillion, three hundred twenty-five billion, four hundred million, four hundred thirty-six thousand, four hundred fifty-seven".