31364328 has 32 divisors (see below), whose sum is σ = 78724800. Its totient is φ = 10412928.

The previous prime is 31364323. The next prime is 31364353. The reversal of 31364328 is 82346313.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 31364295 and 31364304.

It is not an unprimeable number, because it can be changed into a prime (31364323) 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, 3828 + ... + 8796.

It is an arithmetic number, because the mean of its divisors is an integer number (2460150).

Almost surely, 2^31364328 is an apocalyptic number.

It is an amenable number.

31364328 is an abundant number, since it is smaller than the sum of its proper divisors (47360472).

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

31364328 is a wasteful number, since it uses less digits than its factorization.

31364328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5241 (or 5237 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 31364328 is about 5600.3864152396. The cubic root of 31364328 is about 315.3639130022.

The spelling of 31364328 in words is "thirty-one million, three hundred sixty-four thousand, three hundred twenty-eight".