23161338 has 24 divisors (see below), whose sum is σ = 50289876. Its totient is φ = 7704000.

The previous prime is 23161337. The next prime is 23161339. The reversal of 23161338 is 83316132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23161337) and next prime (23161339).

It can be written as a sum of positive squares in 2 ways, for example, as 18378369 + 4782969 = 4287^2 + 2187^2 .

It is not an unprimeable number, because it can be changed into a prime (23161331) 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, 9748 + ... + 11888.

Almost surely, 2^23161338 is an apocalyptic number.

23161338 is an abundant number, since it is smaller than the sum of its proper divisors (27128538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23161338 is a wasteful number, since it uses less digits than its factorization.

23161338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750 (or 2747 counting only the distinct ones).

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

The square root of 23161338 is about 4812.6227776546. The cubic root of 23161338 is about 285.0501112254.

The spelling of 23161338 in words is "twenty-three million, one hundred sixty-one thousand, three hundred thirty-eight".