31275967197 has 16 divisors (see below), whose sum is σ = 41891738112. Its totient is φ = 20755518000.

The previous prime is 31275967189. The next prime is 31275967271. The reversal of 31275967197 is 79176957213.

It is not a de Polignac number, because 31275967197 - 2³ = 31275967189 is a prime.

It is a super-2 number, since 2×31275967197² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31275967117) 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 15 ways as a sum of consecutive naturals, for example, 1394728 + ... + 1416974.

It is an arithmetic number, because the mean of its divisors is an integer number (2618233632).

Almost surely, 2^31275967197 is an apocalyptic number.

It is an amenable number.

31275967197 is a deficient number, since it is larger than the sum of its proper divisors (10615770915).

31275967197 is a wasteful number, since it uses less digits than its factorization.

31275967197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24368.

The product of its digits is 5000940, while the sum is 57.

The spelling of 31275967197 in words is "thirty-one billion, two hundred seventy-five million, nine hundred sixty-seven thousand, one hundred ninety-seven".