23146819 has 4 divisors (see below), whose sum is σ = 23385544. Its totient is φ = 22908096.

The previous prime is 23146811. The next prime is 23146829. The reversal of 23146819 is 91864132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23146819 - 2³ = 23146811 is a prime.

It is a super-2 number, since 2×23146819² = 1071550459637522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23146811) 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, 119217 + ... + 119410.

It is an arithmetic number, because the mean of its divisors is an integer number (5846386).

Almost surely, 2^23146819 is an apocalyptic number.

23146819 is a deficient number, since it is larger than the sum of its proper divisors (238725).

23146819 is an equidigital number, since it uses as much as digits as its factorization.

23146819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238724.

The product of its digits is 10368, while the sum is 34.

The square root of 23146819 is about 4811.1141121366. The cubic root of 23146819 is about 284.9905362611.

The spelling of 23146819 in words is "twenty-three million, one hundred forty-six thousand, eight hundred nineteen".