31460966521 has 2 divisors, whose sum is σ = 31460966522. Its totient is φ = 31460966520.

The previous prime is 31460966501. The next prime is 31460966533. The reversal of 31460966521 is 12566906413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27862286400 + 3598680121 = 166920^2 + 59989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31460966521 is a prime.

It is not a weakly prime, because it can be changed into another prime (31460966501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15730483260 + 15730483261.

It is an arithmetic number, because the mean of its divisors is an integer number (15730483261).

Almost surely, 2^31460966521 is an apocalyptic number.

It is an amenable number.

31460966521 is a deficient number, since it is larger than the sum of its proper divisors (1).

31460966521 is an equidigital number, since it uses as much as digits as its factorization.

31460966521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 31460966521 in words is "thirty-one billion, four hundred sixty million, nine hundred sixty-six thousand, five hundred twenty-one".