31461428744951 has 2 divisors, whose sum is σ = 31461428744952. Its totient is φ = 31461428744950.

The previous prime is 31461428744891. The next prime is 31461428745031. The reversal of 31461428744951 is 15944782416413.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31461428744951 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31461428714951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15730714372475 + 15730714372476.

It is an arithmetic number, because the mean of its divisors is an integer number (15730714372476).

Almost surely, 2^{31461428744951} is an apocalyptic number.

31461428744951 is a deficient number, since it is larger than the sum of its proper divisors (1).

31461428744951 is an equidigital number, since it uses as much as digits as its factorization.

31461428744951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23224320, while the sum is 59.

The spelling of 31461428744951 in words is "thirty-one trillion, four hundred sixty-one billion, four hundred twenty-eight million, seven hundred forty-four thousand, nine hundred fifty-one".