23311421 has 8 divisors (see below), whose sum is σ = 26706624. Its totient is φ = 19932480.

The previous prime is 23311367. The next prime is 23311427. The reversal of 23311421 is 12411332.

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

It is a cyclic number.

It is not a de Polignac number, because 23311421 - 2⁶ = 23311357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23311421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311427) 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, 815 + ... + 6876.

It is an arithmetic number, because the mean of its divisors is an integer number (3338328).

Almost surely, 2^23311421 is an apocalyptic number.

It is an amenable number.

23311421 is a deficient number, since it is larger than the sum of its proper divisors (3395203).

23311421 is an equidigital number, since it uses as much as digits as its factorization.

23311421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8131.

The product of its digits is 144, while the sum is 17.

The square root of 23311421 is about 4828.1902406595. The cubic root of 23311421 is about 285.6644842127.

Adding to 23311421 its reverse (12411332), we get a palindrome (35722753).

It can be divided in two parts, 23311 and 421, that added together give a palindrome (23732).

The spelling of 23311421 in words is "twenty-three million, three hundred eleven thousand, four hundred twenty-one".