31197195471 has 12 divisors (see below), whose sum is σ = 44797556888. Its totient is φ = 19197595344.

The previous prime is 31197195451. The next prime is 31197195473. The reversal of 31197195471 is 17459179113.

It is not a de Polignac number, because 31197195471 - 2⁷ = 31197195343 is a prime.

It is a super-3 number, since 3×31197195471³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31197195471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31197195473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1088896 + ... + 1117178.

Almost surely, 2^31197195471 is an apocalyptic number.

31197195471 is a deficient number, since it is larger than the sum of its proper divisors (13600361417).

31197195471 is an frugal number, since it uses more digits than its factorization.

31197195471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56582 (or 28299 counting only the distinct ones).

The product of its digits is 238140, while the sum is 48.

The spelling of 31197195471 in words is "thirty-one billion, one hundred ninety-seven million, one hundred ninety-five thousand, four hundred seventy-one".