31043104 has 48 divisors (see below), whose sum is σ = 63048888. Its totient is φ = 15040512.

The previous prime is 31043101. The next prime is 31043141. The reversal of 31043104 is 40134013.

It can be written as a sum of positive squares in 4 ways, for example, as 27583504 + 3459600 = 5252^2 + 1860^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31043101) 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, 226524 + ... + 226660.

Almost surely, 2^31043104 is an apocalyptic number.

It is an amenable number.

31043104 is an abundant number, since it is smaller than the sum of its proper divisors (32005784).

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

31043104 is a wasteful number, since it uses less digits than its factorization.

31043104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31043104 is about 5571.6338716753. The cubic root of 31043104 is about 314.2835957354.

Adding to 31043104 its reverse (40134013), we get a palindrome (71177117).

Subtracting 31043104 from its reverse (40134013), we obtain a palindrome (9090909).

The spelling of 31043104 in words is "thirty-one million, forty-three thousand, one hundred four".