31958814797 has 48 divisors (see below), whose sum is σ = 40056164352. Its totient is φ = 24964692480.

The previous prime is 31958814773. The next prime is 31958814803. The reversal of 31958814797 is 79741885913.

It is a happy number.

It is not a de Polignac number, because 31958814797 - 2¹⁰ = 31958813773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31958814737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42217343 + ... + 42218099.

It is an arithmetic number, because the mean of its divisors is an integer number (834503424).

Almost surely, 2^31958814797 is an apocalyptic number.

It is an amenable number.

31958814797 is a deficient number, since it is larger than the sum of its proper divisors (8097349555).

31958814797 is a wasteful number, since it uses less digits than its factorization.

31958814797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198 (or 1185 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 62.

The spelling of 31958814797 in words is "thirty-one billion, nine hundred fifty-eight million, eight hundred fourteen thousand, seven hundred ninety-seven".