23122993 has 4 divisors (see below), whose sum is σ = 23868928. Its totient is φ = 22377060.

The previous prime is 23122991. The next prime is 23123029. The reversal of 23122993 is 39922132.

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 a cyclic number.

It is not a de Polignac number, because 23122993 - 2¹ = 23122991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 745903 = 23122993 / (2 + 3 + 1 + 2 + 2 + 9 + 9 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23122991) 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, 372921 + ... + 372982.

It is an arithmetic number, because the mean of its divisors is an integer number (5967232).

Almost surely, 2^23122993 is an apocalyptic number.

It is an amenable number.

23122993 is a deficient number, since it is larger than the sum of its proper divisors (745935).

23122993 is an equidigital number, since it uses as much as digits as its factorization.

23122993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745934.

The product of its digits is 5832, while the sum is 31.

The square root of 23122993 is about 4808.6373329666. The cubic root of 23122993 is about 284.8927184190.

The spelling of 23122993 in words is "twenty-three million, one hundred twenty-two thousand, nine hundred ninety-three".