31943632679 has 12 divisors (see below), whose sum is σ = 37713534264. Its totient is φ = 26971593264.

The previous prime is 31943632627. The next prime is 31943632681. The reversal of 31943632679 is 97623634913.

It is a happy number.

It is not a de Polignac number, because 31943632679 - 2¹⁶ = 31943567143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31943632679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31943632079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4861724 + ... + 4868289.

It is an arithmetic number, because the mean of its divisors is an integer number (3142794522).

Almost surely, 2^31943632679 is an apocalyptic number.

31943632679 is a deficient number, since it is larger than the sum of its proper divisors (5769901585).

31943632679 is an equidigital number, since it uses as much as digits as its factorization.

31943632679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9730094 (or 9730087 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 53.

The spelling of 31943632679 in words is "thirty-one billion, nine hundred forty-three million, six hundred thirty-two thousand, six hundred seventy-nine".