870912538631 has 2 divisors, whose sum is σ = 870912538632. Its totient is φ = 870912538630.

The previous prime is 870912538619. The next prime is 870912538711. The reversal of 870912538631 is 136835219078.

870912538631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 870912538631 - 2¹⁴ = 870912522247 is a prime.

It is a super-2 number, since 2×870912538631² (a number of 25 digits) contains 22 as substring.

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 (870912534631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435456269315 + 435456269316.

It is an arithmetic number, because the mean of its divisors is an integer number (435456269316).

Almost surely, 2^870912538631 is an apocalyptic number.

870912538631 is a deficient number, since it is larger than the sum of its proper divisors (1).

870912538631 is an equidigital number, since it uses as much as digits as its factorization.

870912538631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 870912538631 in words is "eight hundred seventy billion, nine hundred twelve million, five hundred thirty-eight thousand, six hundred thirty-one".