31980696 has 32 divisors (see below), whose sum is σ = 87220800. Its totient is φ = 9691040.

The previous prime is 31980673. The next prime is 31980719. The reversal of 31980696 is 69608913.

It is an interprime number because it is at equal distance from previous prime (31980673) and next prime (31980719).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60306 + ... + 60833.

It is an arithmetic number, because the mean of its divisors is an integer number (2725650).

Almost surely, 2^31980696 is an apocalyptic number.

It is an amenable number.

31980696 is an abundant number, since it is smaller than the sum of its proper divisors (55240104).

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

31980696 is a wasteful number, since it uses less digits than its factorization.

31980696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121159 (or 121155 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 31980696 is about 5655.1477434281. The cubic root of 31980696 is about 317.4163575732.

The spelling of 31980696 in words is "thirty-one million, nine hundred eighty thousand, six hundred ninety-six".