23430621 has 4 divisors (see below), whose sum is σ = 31240832. Its totient is φ = 15620412.

The previous prime is 23430619. The next prime is 23430643. The reversal of 23430621 is 12603432.

It is a happy number.

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 not a de Polignac number, because 23430621 - 2¹ = 23430619 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 (23430221) 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, 3905101 + ... + 3905106.

It is an arithmetic number, because the mean of its divisors is an integer number (7810208).

Almost surely, 2^23430621 is an apocalyptic number.

It is an amenable number.

23430621 is a deficient number, since it is larger than the sum of its proper divisors (7810211).

23430621 is an equidigital number, since it uses as much as digits as its factorization.

23430621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7810210.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 23430621 is about 4840.5186705559. The cubic root of 23430621 is about 286.1505597146.

The spelling of 23430621 in words is "twenty-three million, four hundred thirty thousand, six hundred twenty-one".