23224381 has 2 divisors, whose sum is σ = 23224382. Its totient is φ = 23224380.

The previous prime is 23224373. The next prime is 23224387. The reversal of 23224381 is 18342232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17892900 + 5331481 = 4230^2 + 2309^2 .

It is a cyclic number.

It is not a de Polignac number, because 23224381 - 2³ = 23224373 is a prime.

It is a super-2 number, since 2×23224381² = 1078743745666322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23224387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11612190 + 11612191.

It is an arithmetic number, because the mean of its divisors is an integer number (11612191).

Almost surely, 2^23224381 is an apocalyptic number.

It is an amenable number.

23224381 is a deficient number, since it is larger than the sum of its proper divisors (1).

23224381 is an equidigital number, since it uses as much as digits as its factorization.

23224381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

The square root of 23224381 is about 4819.1680817336. The cubic root of 23224381 is about 285.3085035252.

It can be divided in two parts, 232243 and 81, that added together give a square (232324 = 482²).

The spelling of 23224381 in words is "twenty-three million, two hundred twenty-four thousand, three hundred eighty-one".