31535501253457 has 2 divisors, whose sum is σ = 31535501253458. Its totient is φ = 31535501253456.

The previous prime is 31535501253413. The next prime is 31535501253463. The reversal of 31535501253457 is 75435210553513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27090525980736 + 4444975272721 = 5204856^2 + 2108311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31535501253457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31535501253457.

It is not a weakly prime, because it can be changed into another prime (31535501253407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15767750626728 + 15767750626729.

It is an arithmetic number, because the mean of its divisors is an integer number (15767750626729).

Almost surely, 2^{31535501253457} is an apocalyptic number.

It is an amenable number.

31535501253457 is a deficient number, since it is larger than the sum of its proper divisors (1).

31535501253457 is an equidigital number, since it uses as much as digits as its factorization.

31535501253457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4725000, while the sum is 49.

The spelling of 31535501253457 in words is "thirty-one trillion, five hundred thirty-five billion, five hundred one million, two hundred fifty-three thousand, four hundred fifty-seven".