23147137 has 4 divisors (see below), whose sum is σ = 24927700. Its totient is φ = 21366576.

The previous prime is 23147129. The next prime is 23147143. The reversal of 23147137 is 73174132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6574096 + 16573041 = 2564^2 + 4071^2 .

It is a cyclic number.

It is not a de Polignac number, because 23147137 - 2³ = 23147129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23147107) 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, 890262 + ... + 890287.

It is an arithmetic number, because the mean of its divisors is an integer number (6231925).

Almost surely, 2^23147137 is an apocalyptic number.

It is an amenable number.

23147137 is a deficient number, since it is larger than the sum of its proper divisors (1780563).

23147137 is a wasteful number, since it uses less digits than its factorization.

23147137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780562.

The product of its digits is 3528, while the sum is 28.

The square root of 23147137 is about 4811.1471605013. The cubic root of 23147137 is about 284.9918413587.

The spelling of 23147137 in words is "twenty-three million, one hundred forty-seven thousand, one hundred thirty-seven".