23381893 has 2 divisors, whose sum is σ = 23381894. Its totient is φ = 23381892.

The previous prime is 23381881. The next prime is 23381899. The reversal of 23381893 is 39818332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19873764 + 3508129 = 4458^2 + 1873^2 .

It is a cyclic number.

It is not a de Polignac number, because 23381893 - 2²¹ = 21284741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23381899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11690946 + 11690947.

It is an arithmetic number, because the mean of its divisors is an integer number (11690947).

Almost surely, 2^23381893 is an apocalyptic number.

It is an amenable number.

23381893 is a deficient number, since it is larger than the sum of its proper divisors (1).

23381893 is an equidigital number, since it uses as much as digits as its factorization.

23381893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 23381893 is about 4835.4827059974. The cubic root of 23381893 is about 285.9520556338.

The spelling of 23381893 in words is "twenty-three million, three hundred eighty-one thousand, eight hundred ninety-three".