23150009 has 2 divisors, whose sum is σ = 23150010. Its totient is φ = 23150008.

The previous prime is 23149969. The next prime is 23150021. The reversal of 23150009 is 90005132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19386409 + 3763600 = 4403^2 + 1940^2 .

It is a cyclic number.

It is not a de Polignac number, because 23150009 - 2²⁰ = 22101433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23150059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11575004 + 11575005.

It is an arithmetic number, because the mean of its divisors is an integer number (11575005).

Almost surely, 2^23150009 is an apocalyptic number.

It is an amenable number.

23150009 is a deficient number, since it is larger than the sum of its proper divisors (1).

23150009 is an equidigital number, since it uses as much as digits as its factorization.

23150009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 23150009 is about 4811.4456247577. The cubic root of 23150009 is about 285.0036277367.

The spelling of 23150009 in words is "twenty-three million, one hundred fifty thousand, nine".