233520413 has 4 divisors (see below), whose sum is σ = 266880480. Its totient is φ = 200160348.

The previous prime is 233520377. The next prime is 233520421. The reversal of 233520413 is 314025332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 233520413 - 2¹⁰ = 233519389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233520433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16680023 + ... + 16680036.

It is an arithmetic number, because the mean of its divisors is an integer number (66720120).

Almost surely, 2^233520413 is an apocalyptic number.

It is an amenable number.

233520413 is a deficient number, since it is larger than the sum of its proper divisors (33360067).

233520413 is an equidigital number, since it uses as much as digits as its factorization.

233520413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33360066.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 233520413 is about 15281.3747091026. The cubic root of 233520413 is about 615.8027396228.

Adding to 233520413 its reverse (314025332), we get a palindrome (547545745).

The spelling of 233520413 in words is "two hundred thirty-three million, five hundred twenty thousand, four hundred thirteen".