23843881 has 2 divisors, whose sum is σ = 23843882. Its totient is φ = 23843880.

The previous prime is 23843857. The next prime is 23843903. The reversal of 23843881 is 18834832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13571856 + 10272025 = 3684^2 + 3205^2 .

It is a cyclic number.

It is not a de Polignac number, because 23843881 - 2⁷ = 23843753 is a prime.

It is a super-2 number, since 2×23843881² = 1137061322284322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23843881.

It is not a weakly prime, because it can be changed into another prime (23843851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11921940 + 11921941.

It is an arithmetic number, because the mean of its divisors is an integer number (11921941).

Almost surely, 2^23843881 is an apocalyptic number.

It is an amenable number.

23843881 is a deficient number, since it is larger than the sum of its proper divisors (1).

23843881 is an equidigital number, since it uses as much as digits as its factorization.

23843881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 37.

The square root of 23843881 is about 4883.0196600055. The cubic root of 23843881 is about 287.8231014029.

The spelling of 23843881 in words is "twenty-three million, eight hundred forty-three thousand, eight hundred eighty-one".