23261421 has 8 divisors (see below), whose sum is σ = 31094944. Its totient is φ = 15467760.

The previous prime is 23261387. The next prime is 23261429. The reversal of 23261421 is 12416232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23261421 - 2¹⁰ = 23260397 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 (23261429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8575 + ... + 10956.

It is an arithmetic number, because the mean of its divisors is an integer number (3886868).

Almost surely, 2^23261421 is an apocalyptic number.

It is an amenable number.

23261421 is a deficient number, since it is larger than the sum of its proper divisors (7833523).

23261421 is a wasteful number, since it uses less digits than its factorization.

23261421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19931.

The product of its digits is 576, while the sum is 21.

The square root of 23261421 is about 4823.0095376227. The cubic root of 23261421 is about 285.4601001572.

Adding to 23261421 its reverse (12416232), we get a palindrome (35677653).

The spelling of 23261421 in words is "twenty-three million, two hundred sixty-one thousand, four hundred twenty-one".