31267299997 has 32 divisors (see below), whose sum is σ = 33920778240. Its totient is φ = 28714909440.

The previous prime is 31267299991. The next prime is 31267300007. The reversal of 31267299997 is 79999276213.

It is not a de Polignac number, because 31267299997 - 2¹¹ = 31267297949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31267299991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81637668 + ... + 81638050.

It is an arithmetic number, because the mean of its divisors is an integer number (1060024320).

Almost surely, 2^31267299997 is an apocalyptic number.

It is an amenable number.

31267299997 is a deficient number, since it is larger than the sum of its proper divisors (2653478243).

31267299997 is a wasteful number, since it uses less digits than its factorization.

31267299997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993.

The product of its digits is 23147208, while the sum is 64.

The spelling of 31267299997 in words is "thirty-one billion, two hundred sixty-seven million, two hundred ninety-nine thousand, nine hundred ninety-seven".