23019397 has 4 divisors (see below), whose sum is σ = 23033376. Its totient is φ = 23005420.

The previous prime is 23019379. The next prime is 23019413. The reversal of 23019397 is 79391032.

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 23019397 - 2¹¹ = 23017349 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 (23019307) 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, 4129 + ... + 7942.

It is an arithmetic number, because the mean of its divisors is an integer number (5758344).

Almost surely, 2^23019397 is an apocalyptic number.

It is an amenable number.

23019397 is a deficient number, since it is larger than the sum of its proper divisors (13979).

23019397 is a wasteful number, since it uses less digits than its factorization.

23019397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13978.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 23019397 is about 4797.8533741664. The cubic root of 23019397 is about 284.4666211562.

The spelling of 23019397 in words is "twenty-three million, nineteen thousand, three hundred ninety-seven".