233136520 has 32 divisors (see below), whose sum is σ = 525813120. Its totient is φ = 93031360.

The previous prime is 233136457. The next prime is 233136529. The reversal of 233136520 is 25631332.

It is a happy number.

233136520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (233136529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10479 + ... + 24001.

It is an arithmetic number, because the mean of its divisors is an integer number (16431660).

Almost surely, 2^233136520 is an apocalyptic number.

233136520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233136520 is an abundant number, since it is smaller than the sum of its proper divisors (292676600).

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

233136520 is a wasteful number, since it uses less digits than its factorization.

233136520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13965 (or 13961 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 233136520 is about 15268.8087289087. The cubic root of 233136520 is about 615.4651074360.

Adding to 233136520 its reverse (25631332), we get a palindrome (258767852).

The spelling of 233136520 in words is "two hundred thirty-three million, one hundred thirty-six thousand, five hundred twenty".