233431212 has 48 divisors (see below), whose sum is σ = 623232512. Its totient is φ = 66614400.

The previous prime is 233431193. The next prime is 233431229. The reversal of 233431212 is 212134332.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128712 + ... + 130512.

Almost surely, 2^233431212 is an apocalyptic number.

It is an amenable number.

233431212 is an abundant number, since it is smaller than the sum of its proper divisors (389801300).

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

233431212 is a wasteful number, since it uses less digits than its factorization.

233431212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358 (or 3356 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 233431212 is about 15278.4558120250. The cubic root of 233431212 is about 615.7243207598.

Adding to 233431212 its reverse (212134332), we get a palindrome (445565544).

The spelling of 233431212 in words is "two hundred thirty-three million, four hundred thirty-one thousand, two hundred twelve".