31626430066457 has 2 divisors, whose sum is σ = 31626430066458. Its totient is φ = 31626430066456.

The previous prime is 31626430066379. The next prime is 31626430066481. The reversal of 31626430066457 is 75466003462613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31540590442201 + 85839624256 = 5616101^2 + 292984^2 .

It is a cyclic number.

It is not a de Polignac number, because 31626430066457 - 2¹² = 31626430062361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31626430066399 and 31626430066408.

It is not a weakly prime, because it can be changed into another prime (31626430063457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15813215033228 + 15813215033229.

It is an arithmetic number, because the mean of its divisors is an integer number (15813215033229).

Almost surely, 2^{31626430066457} is an apocalyptic number.

It is an amenable number.

31626430066457 is a deficient number, since it is larger than the sum of its proper divisors (1).

31626430066457 is an equidigital number, since it uses as much as digits as its factorization.

31626430066457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13063680, while the sum is 53.

The spelling of 31626430066457 in words is "thirty-one trillion, six hundred twenty-six billion, four hundred thirty million, sixty-six thousand, four hundred fifty-seven".