23013811 has 4 divisors (see below), whose sum is σ = 23756224. Its totient is φ = 22271400.

The previous prime is 23013799. The next prime is 23013821. The reversal of 23013811 is 11831032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23013811 is a prime.

It is a super-3 number, since 3×23013811³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23013821) 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, 371160 + ... + 371221.

It is an arithmetic number, because the mean of its divisors is an integer number (5939056).

Almost surely, 2^23013811 is an apocalyptic number.

23013811 is a deficient number, since it is larger than the sum of its proper divisors (742413).

23013811 is an equidigital number, since it uses as much as digits as its factorization.

23013811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742412.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 23013811 is about 4797.2712035073. The cubic root of 23013811 is about 284.4436092720.

Adding to 23013811 its reverse (11831032), we get a palindrome (34844843).

It can be divided in two parts, 230 and 13811, that added together give a palindrome (14041).

The spelling of 23013811 in words is "twenty-three million, thirteen thousand, eight hundred eleven".