233134640 has 20 divisors (see below), whose sum is σ = 542038224. Its totient is φ = 93253824.

The previous prime is 233134639. The next prime is 233134661. The reversal of 233134640 is 46431332.

It is a happy number.

233134640 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1457012 + ... + 1457171.

Almost surely, 2^233134640 is an apocalyptic number.

233134640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233134640 is an abundant number, since it is smaller than the sum of its proper divisors (308903584).

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

233134640 is a wasteful number, since it uses less digits than its factorization.

233134640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914196 (or 2914190 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 233134640 is about 15268.7471653702. The cubic root of 233134640 is about 615.4634530727.

Adding to 233134640 its reverse (46431332), we get a palindrome (279565972).

The spelling of 233134640 in words is "two hundred thirty-three million, one hundred thirty-four thousand, six hundred forty".