31279936797 has 24 divisors (see below), whose sum is σ = 47567582400. Its totient is φ = 19752657408.

The previous prime is 31279936783. The next prime is 31279936801. The reversal of 31279936797 is 79763997213.

It is not a de Polignac number, because 31279936797 - 2⁷ = 31279936669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31279936757) 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, 1636029 + ... + 1655037.

It is an arithmetic number, because the mean of its divisors is an integer number (1981982600).

Almost surely, 2^31279936797 is an apocalyptic number.

It is an amenable number.

31279936797 is a deficient number, since it is larger than the sum of its proper divisors (16287645603).

31279936797 is a wasteful number, since it uses less digits than its factorization.

31279936797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28657 (or 28654 counting only the distinct ones).

The product of its digits is 27005076, while the sum is 63.

The spelling of 31279936797 in words is "thirty-one billion, two hundred seventy-nine million, nine hundred thirty-six thousand, seven hundred ninety-seven".