51060531631 has 2 divisors, whose sum is σ = 51060531632. Its totient is φ = 51060531630.

The previous prime is 51060531617. The next prime is 51060531659. The reversal of 51060531631 is 13613506015.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51060531631 is a prime.

It is a super-2 number, since 2×51060531631² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51060531593 and 51060531602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51060531131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25530265815 + 25530265816.

It is an arithmetic number, because the mean of its divisors is an integer number (25530265816).

Almost surely, 2^51060531631 is an apocalyptic number.

51060531631 is a deficient number, since it is larger than the sum of its proper divisors (1).

51060531631 is an equidigital number, since it uses as much as digits as its factorization.

51060531631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 31.

The spelling of 51060531631 in words is "fifty-one billion, sixty million, five hundred thirty-one thousand, six hundred thirty-one".