82004396931 has 24 divisors (see below), whose sum is σ = 120273963264. Its totient is φ = 53834258160.

The previous prime is 82004396923. The next prime is 82004396933. The reversal of 82004396931 is 13969340028.

It is a happy number.

82004396931 is a `hidden beast` number, since 8 + 200 + 439 + 6 + 9 + 3 + 1 = 666.

It is not a de Polignac number, because 82004396931 - 2³ = 82004396923 is a prime.

It is a super-2 number, since 2×82004396931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82004396933) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94135 + ... + 415776.

It is an arithmetic number, because the mean of its divisors is an integer number (5011415136).

Almost surely, 2^82004396931 is an apocalyptic number.

82004396931 is a deficient number, since it is larger than the sum of its proper divisors (38269566333).

82004396931 is a wasteful number, since it uses less digits than its factorization.

82004396931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510191 (or 510188 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 82004396931 in words is "eighty-two billion, four million, three hundred ninety-six thousand, nine hundred thirty-one".