23133413 has 4 divisors (see below), whose sum is σ = 24494220. Its totient is φ = 21772608.

The previous prime is 23133403. The next prime is 23133419. The reversal of 23133413 is 31433132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11175649 + 11957764 = 3343^2 + 3458^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23133413 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 (23133419) 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, 680378 + ... + 680411.

It is an arithmetic number, because the mean of its divisors is an integer number (6123555).

Almost surely, 2^23133413 is an apocalyptic number.

It is an amenable number.

23133413 is a deficient number, since it is larger than the sum of its proper divisors (1360807).

23133413 is a wasteful number, since it uses less digits than its factorization.

23133413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360806.

The product of its digits is 648, while the sum is 20.

The square root of 23133413 is about 4809.7206779604. The cubic root of 23133413 is about 284.9355060795.

Adding to 23133413 its reverse (31433132), we get a palindrome (54566545).

The spelling of 23133413 in words is "twenty-three million, one hundred thirty-three thousand, four hundred thirteen".