31980675 has 18 divisors (see below), whose sum is σ = 52955812. Its totient is φ = 17030240.

The previous prime is 31980673. The next prime is 31980719. The reversal of 31980675 is 57608913.

It is not a de Polignac number, because 31980675 - 2¹ = 31980673 is a prime.

It is a super-3 number, since 3×31980675³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31980671) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 48649 + ... + 49301.

Almost surely, 2^31980675 is an apocalyptic number.

31980675 is a deficient number, since it is larger than the sum of its proper divisors (20975137).

31980675 is an frugal number, since it uses more digits than its factorization.

31980675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 31980675 is about 5655.1458867124. The cubic root of 31980675 is about 317.4162880965.

The spelling of 31980675 in words is "thirty-one million, nine hundred eighty thousand, six hundred seventy-five".