31045328 has 20 divisors (see below), whose sum is σ = 61171680. Its totient is φ = 15259104.

The previous prime is 31045319. The next prime is 31045351. The reversal of 31045328 is 82354013.

It is a junction number, because it is equal to n+sod(n) for n = 31045297 and 31045306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15500 + ... + 17387.

It is an arithmetic number, because the mean of its divisors is an integer number (3058584).

Almost surely, 2^31045328 is an apocalyptic number.

It is an amenable number.

31045328 is a deficient number, since it is larger than the sum of its proper divisors (30126352).

31045328 is a wasteful number, since it uses less digits than its factorization.

31045328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32954 (or 32948 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 31045328 is about 5571.8334504901. The cubic root of 31045328 is about 314.2911008915.

The spelling of 31045328 in words is "thirty-one million, forty-five thousand, three hundred twenty-eight".