23113381 has 8 divisors (see below), whose sum is σ = 23759064. Its totient is φ = 22471680.

The previous prime is 23113379. The next prime is 23113393. The reversal of 23113381 is 18331132.

It can be written as a sum of positive squares in 4 ways, for example, as 217156 + 22896225 = 466^2 + 4785^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23113381 - 2¹ = 23113379 is a prime.

It is a super-2 number, since 2×23113381² = 1068456762502322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13675 + ... + 15271.

It is an arithmetic number, because the mean of its divisors is an integer number (2969883).

Almost surely, 2^23113381 is an apocalyptic number.

It is an amenable number.

23113381 is a deficient number, since it is larger than the sum of its proper divisors (645683).

23113381 is a wasteful number, since it uses less digits than its factorization.

23113381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991.

The product of its digits is 432, while the sum is 22.

The square root of 23113381 is about 4807.6377775369. The cubic root of 23113381 is about 284.8532372507.

The spelling of 23113381 in words is "twenty-three million, one hundred thirteen thousand, three hundred eighty-one".