3131980 has 24 divisors (see below), whose sum is σ = 6627600. Its totient is φ = 1243200.

The previous prime is 3131977. The next prime is 3131981. The reversal of 3131980 is 891313.

It is not an unprimeable number, because it can be changed into a prime (3131981) 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, 2455 + ... + 3505.

It is an arithmetic number, because the mean of its divisors is an integer number (276150).

Almost surely, 2^3131980 is an apocalyptic number.

It is an amenable number.

3131980 is an abundant number, since it is smaller than the sum of its proper divisors (3495620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131980 is a wasteful number, since it uses less digits than its factorization.

3131980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 3131980 is about 1769.7400939121. The cubic root of 3131980 is about 146.3096574012.

The spelling of 3131980 in words is "three million, one hundred thirty-one thousand, nine hundred eighty".