309812631039 has 12 divisors (see below), whose sum is σ = 466963965936. Its totient is φ = 197561677632.

The previous prime is 309812631013. The next prime is 309812631041. The reversal of 309812631039 is 930136218903.

309812631039 is a `hidden beast` number, since 3 + 0 + 9 + 8 + 1 + 2 + 631 + 0 + 3 + 9 = 666.

It is not a de Polignac number, because 309812631039 - 2⁹ = 309812630527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 309812630985 and 309812631003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309812631059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 748339482 + ... + 748339895.

It is an arithmetic number, because the mean of its divisors is an integer number (38913663828).

Almost surely, 2^309812631039 is an apocalyptic number.

309812631039 is a deficient number, since it is larger than the sum of its proper divisors (157151334897).

309812631039 is a wasteful number, since it uses less digits than its factorization.

309812631039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496679406 (or 1496679403 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 309812631039 in words is "three hundred nine billion, eight hundred twelve million, six hundred thirty-one thousand, thirty-nine".