23138361 has 12 divisors (see below), whose sum is σ = 33464340. Its totient is φ = 15406080.

The previous prime is 23138303. The next prime is 23138387. The reversal of 23138361 is 16383132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7290000 + 15848361 = 2700^2 + 3981^2 .

It is not a de Polignac number, because 23138361 - 2¹⁰ = 23137337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23138461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11305 + ... + 13193.

It is an arithmetic number, because the mean of its divisors is an integer number (2788695).

Almost surely, 2^23138361 is an apocalyptic number.

It is an amenable number.

23138361 is a deficient number, since it is larger than the sum of its proper divisors (10325979).

23138361 is a wasteful number, since it uses less digits than its factorization.

23138361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256 (or 3253 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 23138361 is about 4810.2350254431. The cubic root of 23138361 is about 284.9558195597.

It can be divided in two parts, 23 and 138361, that added together give a square (138384 = 372²).

The spelling of 23138361 in words is "twenty-three million, one hundred thirty-eight thousand, three hundred sixty-one".