31882694489 has 8 divisors (see below), whose sum is σ = 33889506408. Its totient is φ = 29890478080.

The previous prime is 31882694479. The next prime is 31882694551. The reversal of 31882694489 is 98449628813.

It can be written as a sum of positive squares in 4 ways, for example, as 7447690000 + 24435004489 = 86300^2 + 156317^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31882694489 is a prime.

It is a super-2 number, since 2×31882694489² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31882694419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3644372 + ... + 3653109.

It is an arithmetic number, because the mean of its divisors is an integer number (4236188301).

Almost surely, 2^31882694489 is an apocalyptic number.

It is an amenable number.

31882694489 is a deficient number, since it is larger than the sum of its proper divisors (2006811919).

31882694489 is a wasteful number, since it uses less digits than its factorization.

31882694489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7297755.

The product of its digits is 23887872, while the sum is 62.

The spelling of 31882694489 in words is "thirty-one billion, eight hundred eighty-two million, six hundred ninety-four thousand, four hundred eighty-nine".