23020311 has 16 divisors (see below), whose sum is σ = 31627008. Its totient is φ = 14884800.

The previous prime is 23020307. The next prime is 23020337. The reversal of 23020311 is 11302032.

It is a happy number.

It is not a de Polignac number, because 23020311 - 2² = 23020307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23020111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25510 + ... + 26396.

It is an arithmetic number, because the mean of its divisors is an integer number (1976688).

Almost surely, 2^23020311 is an apocalyptic number.

23020311 is a deficient number, since it is larger than the sum of its proper divisors (8606697).

23020311 is a wasteful number, since it uses less digits than its factorization.

23020311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 23020311 is about 4797.9486241518. The cubic root of 23020311 is about 284.4703860832.

Adding to 23020311 its reverse (11302032), we get a palindrome (34322343).

It can be divided in two parts, 2302031 and 1, that added together give a palindrome (2302032).

The spelling of 23020311 in words is "twenty-three million, twenty thousand, three hundred eleven".