23015149 has 4 divisors (see below), whose sum is σ = 23306560. Its totient is φ = 22723740.

The previous prime is 23015143. The next prime is 23015159. The reversal of 23015149 is 94151032.

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 23015149 - 2³ = 23015141 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 (23015141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145587 + ... + 145744.

It is an arithmetic number, because the mean of its divisors is an integer number (5826640).

Almost surely, 2^23015149 is an apocalyptic number.

It is an amenable number.

23015149 is a deficient number, since it is larger than the sum of its proper divisors (291411).

23015149 is an equidigital number, since it uses as much as digits as its factorization.

23015149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291410.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 23015149 is about 4797.4106557600. The cubic root of 23015149 is about 284.4491215876.

The spelling of 23015149 in words is "twenty-three million, fifteen thousand, one hundred forty-nine".