31233230 has 16 divisors (see below), whose sum is σ = 64251360. Its totient is φ = 10708512.

The previous prime is 31233229. The next prime is 31233253. The reversal of 31233230 is 3233213.

It is a junction number, because it is equal to n+sod(n) for n = 31233199 and 31233208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223025 + ... + 223164.

It is an arithmetic number, because the mean of its divisors is an integer number (4015710).

Almost surely, 2^31233230 is an apocalyptic number.

31233230 is an abundant number, since it is smaller than the sum of its proper divisors (33018130).

31233230 is a wasteful number, since it uses less digits than its factorization.

31233230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446203.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 31233230 is about 5588.6697880623. The cubic root of 31233230 is about 314.9239087226.

Subtracting from 31233230 its sum of digits (17), we obtain a palindrome (31233213).

Adding to 31233230 its reverse (3233213), we get a palindrome (34466443).

The spelling of 31233230 in words is "thirty-one million, two hundred thirty-three thousand, two hundred thirty".