31233104 has 20 divisors (see below), whose sum is σ = 69159264. Its totient is φ = 13385568.

The previous prime is 31233101. The next prime is 31233119. The reversal of 31233104 is 40133213.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139322 + ... + 139545.

Almost surely, 2^31233104 is an apocalyptic number.

It is an amenable number.

31233104 is an abundant number, since it is smaller than the sum of its proper divisors (37926160).

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

31233104 is a wasteful number, since it uses less digits than its factorization.

31233104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278882 (or 278876 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 31233104 is about 5588.6585152432. The cubic root of 31233104 is about 314.9234852370.

Adding to 31233104 its reverse (40133213), we get a palindrome (71366317).

The spelling of 31233104 in words is "thirty-one million, two hundred thirty-three thousand, one hundred four".