31828113 has 32 divisors (see below), whose sum is σ = 49766400. Its totient is φ = 20064528.

The previous prime is 31828087. The next prime is 31828163. The reversal of 31828113 is 31182813.

It is not a de Polignac number, because 31828113 - 2¹⁸ = 31565969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (31828163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66208 + ... + 66686.

It is an arithmetic number, because the mean of its divisors is an integer number (1555200).

Almost surely, 2^31828113 is an apocalyptic number.

It is an amenable number.

31828113 is a deficient number, since it is larger than the sum of its proper divisors (17938287).

31828113 is a wasteful number, since it uses less digits than its factorization.

31828113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 612 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 31828113 is about 5641.6409846781. The cubic root of 31828113 is about 316.9107445410.

The spelling of 31828113 in words is "thirty-one million, eight hundred twenty-eight thousand, one hundred thirteen".