85354931 has 2 divisors, whose sum is σ = 85354932. Its totient is φ = 85354930.

The previous prime is 85354901. The next prime is 85354937. The reversal of 85354931 is 13945358.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85354931 is a prime.

It is a super-2 number, since 2×85354931² = 14570928492029522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85354937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42677465 + 42677466.

It is an arithmetic number, because the mean of its divisors is an integer number (42677466).

Almost surely, 2^85354931 is an apocalyptic number.

85354931 is a deficient number, since it is larger than the sum of its proper divisors (1).

85354931 is an equidigital number, since it uses as much as digits as its factorization.

85354931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 38.

The square root of 85354931 is about 9238.7732410748. The cubic root of 85354931 is about 440.2941060549.

The spelling of 85354931 in words is "eighty-five million, three hundred fifty-four thousand, nine hundred thirty-one".