23233513 has 4 divisors (see below), whose sum is σ = 23243220. Its totient is φ = 23223808.

The previous prime is 23233501. The next prime is 23233517. The reversal of 23233513 is 31533232.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12131289 + 11102224 = 3483^2 + 3332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23233513 is a prime.

It is a super-2 number, since 2×23233513² = 1079592252642338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23233517) 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, 1581 + ... + 6997.

It is an arithmetic number, because the mean of its divisors is an integer number (5810805).

Almost surely, 2^23233513 is an apocalyptic number.

It is an amenable number.

23233513 is a deficient number, since it is larger than the sum of its proper divisors (9707).

23233513 is an equidigital number, since it uses as much as digits as its factorization.

23233513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9706.

The product of its digits is 1620, while the sum is 22.

The square root of 23233513 is about 4820.1154550488. The cubic root of 23233513 is about 285.3458937695.

Adding to 23233513 its reverse (31533232), we get a palindrome (54766745).

The spelling of 23233513 in words is "twenty-three million, two hundred thirty-three thousand, five hundred thirteen".