23097621 has 4 divisors (see below), whose sum is σ = 30796832. Its totient is φ = 15398412.

The previous prime is 23097619. The next prime is 23097631. The reversal of 23097621 is 12679032.

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 23097621 - 2¹ = 23097619 is a prime.

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 (23097631) 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, 3849601 + ... + 3849606.

It is an arithmetic number, because the mean of its divisors is an integer number (7699208).

Almost surely, 2^23097621 is an apocalyptic number.

It is an amenable number.

23097621 is a deficient number, since it is larger than the sum of its proper divisors (7699211).

23097621 is an equidigital number, since it uses as much as digits as its factorization.

23097621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7699210.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 23097621 is about 4805.9984394504. The cubic root of 23097621 is about 284.7884795568.

The spelling of 23097621 in words is "twenty-three million, ninety-seven thousand, six hundred twenty-one".