23122381 has 2 divisors, whose sum is σ = 23122382. Its totient is φ = 23122380.

The previous prime is 23122369. The next prime is 23122387. The reversal of 23122381 is 18322132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21706281 + 1416100 = 4659^2 + 1190^2 .

It is a cyclic number.

It is not a de Polignac number, because 23122381 - 2¹¹ = 23120333 is a prime.

It is a super-2 number, since 2×23122381² = 1069289006218322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23122387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11561190 + 11561191.

It is an arithmetic number, because the mean of its divisors is an integer number (11561191).

Almost surely, 2^23122381 is an apocalyptic number.

It is an amenable number.

23122381 is a deficient number, since it is larger than the sum of its proper divisors (1).

23122381 is an equidigital number, since it uses as much as digits as its factorization.

23122381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

The square root of 23122381 is about 4808.5736970540. The cubic root of 23122381 is about 284.8902049629.

The spelling of 23122381 in words is "twenty-three million, one hundred twenty-two thousand, three hundred eighty-one".