233143140 has 24 divisors (see below), whose sum is σ = 652800960. Its totient is φ = 62171488.

The previous prime is 233143139. The next prime is 233143193. The reversal of 233143140 is 41341332.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1942800 + ... + 1942919.

It is an arithmetic number, because the mean of its divisors is an integer number (27200040).

Almost surely, 2^233143140 is an apocalyptic number.

233143140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233143140 is an abundant number, since it is smaller than the sum of its proper divisors (419657820).

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

233143140 is a wasteful number, since it uses less digits than its factorization.

233143140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885731 (or 3885729 counting only the distinct ones).

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

The square root of 233143140 is about 15269.0255091803. The cubic root of 233143140 is about 615.4709328360.

Adding to 233143140 its reverse (41341332), we get a palindrome (274484472).

The spelling of 233143140 in words is "two hundred thirty-three million, one hundred forty-three thousand, one hundred forty".