31093104 has 80 divisors (see below), whose sum is σ = 94993920. Its totient is φ = 8574720.

The previous prime is 31093099. The next prime is 31093123. The reversal of 31093104 is 40139013.

It is a super-2 number, since 2×31093104² = 1933562232709632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 15 ways as a sum of consecutive naturals, for example, 8149 + ... + 11339.

It is an arithmetic number, because the mean of its divisors is an integer number (1187424).

Almost surely, 2^31093104 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 31093104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47496960).

31093104 is an abundant number, since it is smaller than the sum of its proper divisors (63900816).

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

31093104 is a wasteful number, since it uses less digits than its factorization.

31093104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238 (or 3232 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 31093104 is about 5576.1190805075. The cubic root of 31093104 is about 314.4522402818.

The spelling of 31093104 in words is "thirty-one million, ninety-three thousand, one hundred four".