86530170931 has 2 divisors, whose sum is σ = 86530170932. Its totient is φ = 86530170930.

The previous prime is 86530170929. The next prime is 86530170943. The reversal of 86530170931 is 13907103568.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86530170931 - 2¹ = 86530170929 is a prime.

It is a super-2 number, since 2×86530170931² (a number of 23 digits) contains 22 as substring.

Together with 86530170929, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (86530170431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43265085465 + 43265085466.

It is an arithmetic number, because the mean of its divisors is an integer number (43265085466).

Almost surely, 2^86530170931 is an apocalyptic number.

86530170931 is a deficient number, since it is larger than the sum of its proper divisors (1).

86530170931 is an equidigital number, since it uses as much as digits as its factorization.

86530170931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 86530170931 in words is "eighty-six billion, five hundred thirty million, one hundred seventy thousand, nine hundred thirty-one".