23135311 has 4 divisors (see below), whose sum is σ = 23149224. Its totient is φ = 23121400.

The previous prime is 23135303. The next prime is 23135339. The reversal of 23135311 is 11353132.

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

It is a cyclic number.

It is not a de Polignac number, because 23135311 - 2³ = 23135303 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 (23135381) 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, 4060 + ... + 7921.

It is an arithmetic number, because the mean of its divisors is an integer number (5787306).

Almost surely, 2^23135311 is an apocalyptic number.

23135311 is a deficient number, since it is larger than the sum of its proper divisors (13913).

23135311 is a wasteful number, since it uses less digits than its factorization.

23135311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13912.

The product of its digits is 270, while the sum is 19.

The square root of 23135311 is about 4809.9179826687. The cubic root of 23135311 is about 284.9432984561.

Adding to 23135311 its reverse (11353132), we get a palindrome (34488443).

It can be divided in two parts, 2 and 3135311, that added together give a palindrome (3135313).

The spelling of 23135311 in words is "twenty-three million, one hundred thirty-five thousand, three hundred eleven".