23206513 has 16 divisors (see below), whose sum is σ = 26986176. Its totient is φ = 19722240.

The previous prime is 23206501. The next prime is 23206523. The reversal of 23206513 is 31560232.

It is a cyclic number.

It is not a de Polignac number, because 23206513 - 2¹³ = 23198321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23206523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35770 + ... + 36412.

It is an arithmetic number, because the mean of its divisors is an integer number (1686636).

Almost surely, 2^23206513 is an apocalyptic number.

It is an amenable number.

23206513 is a deficient number, since it is larger than the sum of its proper divisors (3779663).

23206513 is a wasteful number, since it uses less digits than its factorization.

23206513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 23206513 is about 4817.3138780860. The cubic root of 23206513 is about 285.2353160665.

Adding to 23206513 its reverse (31560232), we get a palindrome (54766745).

The spelling of 23206513 in words is "twenty-three million, two hundred six thousand, five hundred thirteen".