23123019 has 8 divisors (see below), whose sum is σ = 32453440. Its totient is φ = 14603976.

The previous prime is 23122991. The next prime is 23123029. The reversal of 23123019 is 91032132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23123019 - 2⁹ = 23122507 is a prime.

It is a super-2 number, since 2×23123019² = 1069348015348722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23122986 and 23123004.

It is not an unprimeable number, because it can be changed into a prime (23123029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202777 + ... + 202890.

It is an arithmetic number, because the mean of its divisors is an integer number (4056680).

Almost surely, 2^23123019 is an apocalyptic number.

23123019 is a deficient number, since it is larger than the sum of its proper divisors (9330421).

23123019 is a wasteful number, since it uses less digits than its factorization.

23123019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405689.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 23123019 is about 4808.6400364344. The cubic root of 23123019 is about 284.8928251988.

The spelling of 23123019 in words is "twenty-three million, one hundred twenty-three thousand, nineteen".