23151413 has 4 divisors (see below), whose sum is σ = 23376288. Its totient is φ = 22926540.

The previous prime is 23151397. The next prime is 23151419. The reversal of 23151413 is 31415132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23151413 - 2⁴ = 23151397 is a prime.

It is a super-3 number, since 3×23151413³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23151419) 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 3 ways as a sum of consecutive naturals, for example, 112283 + ... + 112488.

It is an arithmetic number, because the mean of its divisors is an integer number (5844072).

Almost surely, 2^23151413 is an apocalyptic number.

It is an amenable number.

23151413 is a deficient number, since it is larger than the sum of its proper divisors (224875).

23151413 is a wasteful number, since it uses less digits than its factorization.

23151413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224874.

The product of its digits is 360, while the sum is 20.

The square root of 23151413 is about 4811.5915246413. The cubic root of 23151413 is about 285.0093892464.

Adding to 23151413 its reverse (31415132), we get a palindrome (54566545).

The spelling of 23151413 in words is "twenty-three million, one hundred fifty-one thousand, four hundred thirteen".