23851481 has 2 divisors, whose sum is σ = 23851482. Its totient is φ = 23851480.

The previous prime is 23851433. The next prime is 23851547. The reversal of 23851481 is 18415832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21307456 + 2544025 = 4616^2 + 1595^2 .

It is a cyclic number.

It is not a de Polignac number, because 23851481 - 2⁶ = 23851417 is a prime.

It is a super-2 number, since 2×23851481² = 1137786291786722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23851781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11925740 + 11925741.

It is an arithmetic number, because the mean of its divisors is an integer number (11925741).

Almost surely, 2^23851481 is an apocalyptic number.

It is an amenable number.

23851481 is a deficient number, since it is larger than the sum of its proper divisors (1).

23851481 is an equidigital number, since it uses as much as digits as its factorization.

23851481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 32.

The square root of 23851481 is about 4883.7978049874. The cubic root of 23851481 is about 287.8536784050.

The spelling of 23851481 in words is "twenty-three million, eight hundred fifty-one thousand, four hundred eighty-one".