31397995814 has 12 divisors (see below), whose sum is σ = 47257012572. Its totient is φ = 15645672900.

The previous prime is 31397995757. The next prime is 31397995829. The reversal of 31397995814 is 41859979313.

It is a super-2 number, since 2×31397995814² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4387139 + ... + 4394289.

It is an arithmetic number, because the mean of its divisors is an integer number (3938084381).

Almost surely, 2^31397995814 is an apocalyptic number.

31397995814 is a deficient number, since it is larger than the sum of its proper divisors (15859016758).

31397995814 is an frugal number, since it uses more digits than its factorization.

31397995814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14611 (or 7460 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 59.

The spelling of 31397995814 in words is "thirty-one billion, three hundred ninety-seven million, nine hundred ninety-five thousand, eight hundred fourteen".