23629381 has 2 divisors, whose sum is σ = 23629382. Its totient is φ = 23629380.

The previous prime is 23629379. The next prime is 23629393. The reversal of 23629381 is 18392632.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19492225 + 4137156 = 4415^2 + 2034^2 .

It is a cyclic number.

It is not a de Polignac number, because 23629381 - 2¹ = 23629379 is a prime.

It is a super-2 number, since 2×23629381² = 1116695292886322, which contains 22 as substring.

Together with 23629379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23629481) 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, 11814690 + 11814691.

It is an arithmetic number, because the mean of its divisors is an integer number (11814691).

Almost surely, 2^23629381 is an apocalyptic number.

It is an amenable number.

23629381 is a deficient number, since it is larger than the sum of its proper divisors (1).

23629381 is an equidigital number, since it uses as much as digits as its factorization.

23629381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 23629381 is about 4861.0061715657. The cubic root of 23629381 is about 286.9574129366.

The spelling of 23629381 in words is "twenty-three million, six hundred twenty-nine thousand, three hundred eighty-one".