31345716 has 12 divisors (see below), whose sum is σ = 73140032. Its totient is φ = 10448568.

The previous prime is 31345703. The next prime is 31345789. The reversal of 31345716 is 61754313.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1306060 + ... + 1306083.

Almost surely, 2^31345716 is an apocalyptic number.

It is an amenable number.

31345716 is an abundant number, since it is smaller than the sum of its proper divisors (41794316).

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

31345716 is a wasteful number, since it uses less digits than its factorization.

31345716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612150 (or 2612148 counting only the distinct ones).

The product of its digits is 7560, while the sum is 30.

The square root of 31345716 is about 5598.7244975976. The cubic root of 31345716 is about 315.3015203104.

The spelling of 31345716 in words is "thirty-one million, three hundred forty-five thousand, seven hundred sixteen".