31679121873 has 32 divisors (see below), whose sum is σ = 48487479040. Its totient is φ = 18022072320.

The previous prime is 31679121847. The next prime is 31679121899. The reversal of 31679121873 is 37812197613.

It is an interprime number because it is at equal distance from previous prime (31679121847) and next prime (31679121899).

It is not a de Polignac number, because 31679121873 - 2⁹ = 31679121361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31679121673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5439303 + ... + 5445123.

It is an arithmetic number, because the mean of its divisors is an integer number (1515233720).

Almost surely, 2^31679121873 is an apocalyptic number.

It is an amenable number.

31679121873 is a deficient number, since it is larger than the sum of its proper divisors (16808357167).

31679121873 is a wasteful number, since it uses less digits than its factorization.

31679121873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6937.

The product of its digits is 381024, while the sum is 48.

The spelling of 31679121873 in words is "thirty-one billion, six hundred seventy-nine million, one hundred twenty-one thousand, eight hundred seventy-three".