23138207 has 18 divisors (see below), whose sum is σ = 26090088. Its totient is φ = 20477248.

The previous prime is 23138197. The next prime is 23138237. The reversal of 23138207 is 70283132.

It is not a de Polignac number, because 23138207 - 2¹⁶ = 23072671 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 (23138237) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 392144 + ... + 392202.

Almost surely, 2^23138207 is an apocalyptic number.

23138207 is a deficient number, since it is larger than the sum of its proper divisors (2951881).

23138207 is an equidigital number, since it uses as much as digits as its factorization.

23138207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 23138207 is about 4810.2190178827. The cubic root of 23138207 is about 284.9551873729.

The spelling of 23138207 in words is "twenty-three million, one hundred thirty-eight thousand, two hundred seven".