82313931 has 8 divisors (see below), whose sum is σ = 125430784. Its totient is φ = 47036520.

The previous prime is 82313927. The next prime is 82313939. The reversal of 82313931 is 13931328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82313931 - 2² = 82313927 is a prime.

It is a super-2 number, since 2×82313931² = 13551166473345522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82313939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1959835 + ... + 1959876.

It is an arithmetic number, because the mean of its divisors is an integer number (15678848).

Almost surely, 2^82313931 is an apocalyptic number.

82313931 is a deficient number, since it is larger than the sum of its proper divisors (43116853).

82313931 is a wasteful number, since it uses less digits than its factorization.

82313931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919721.

The product of its digits is 3888, while the sum is 30.

The square root of 82313931 is about 9072.7025190954. The cubic root of 82313931 is about 435.0018602114.

The spelling of 82313931 in words is "eighty-two million, three hundred thirteen thousand, nine hundred thirty-one".