86789370931 has 2 divisors, whose sum is σ = 86789370932. Its totient is φ = 86789370930.

The previous prime is 86789370923. The next prime is 86789370991. The reversal of 86789370931 is 13907398768.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86789370931 - 2³ = 86789370923 is a prime.

It is a super-2 number, since 2×86789370931² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86789370931.

It is not a weakly prime, because it can be changed into another prime (86789370991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43394685465 + 43394685466.

It is an arithmetic number, because the mean of its divisors is an integer number (43394685466).

Almost surely, 2^86789370931 is an apocalyptic number.

86789370931 is a deficient number, since it is larger than the sum of its proper divisors (1).

86789370931 is an equidigital number, since it uses as much as digits as its factorization.

86789370931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 86789370931 in words is "eighty-six billion, seven hundred eighty-nine million, three hundred seventy thousand, nine hundred thirty-one".