31383696 has 80 divisors (see below), whose sum is σ = 85494528. Its totient is φ = 9907200.

The previous prime is 31383647. The next prime is 31383701. The reversal of 31383696 is 69638313.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72601 + ... + 73031.

Almost surely, 2^31383696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31383696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42747264).

31383696 is an abundant number, since it is smaller than the sum of its proper divisors (54110832).

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

31383696 is a wasteful number, since it uses less digits than its factorization.

31383696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 514 counting only the distinct ones).

The product of its digits is 69984, while the sum is 39.

The square root of 31383696 is about 5602.1153147717. The cubic root of 31383696 is about 315.4288138182.

The spelling of 31383696 in words is "thirty-one million, three hundred eighty-three thousand, six hundred ninety-six".