233040521 has 12 divisors (see below), whose sum is σ = 277394832. Its totient is φ = 195101928.

The previous prime is 233040503. The next prime is 233040551. The reversal of 233040521 is 125040332.

It is a happy number.

It is not a de Polignac number, because 233040521 - 2²⁶ = 165931657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233040493 and 233040502.

It is not an unprimeable number, because it can be changed into a prime (233040551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53195 + ... + 57408.

It is an arithmetic number, because the mean of its divisors is an integer number (23116236).

Almost surely, 2^233040521 is an apocalyptic number.

It is an amenable number.

233040521 is a deficient number, since it is larger than the sum of its proper divisors (44354311).

233040521 is a wasteful number, since it uses less digits than its factorization.

233040521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110660 (or 110653 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 233040521 is about 15265.6647742573. The cubic root of 233040521 is about 615.3806188190.

Adding to 233040521 its reverse (125040332), we get a palindrome (358080853).

The spelling of 233040521 in words is "two hundred thirty-three million, forty thousand, five hundred twenty-one".