23443481 has 2 divisors, whose sum is σ = 23443482. Its totient is φ = 23443480.

The previous prime is 23443457. The next prime is 23443489. The reversal of 23443481 is 18434432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18966025 + 4477456 = 4355^2 + 2116^2 .

It is a cyclic number.

It is not a de Polignac number, because 23443481 - 2¹⁰ = 23442457 is a prime.

It is a super-2 number, since 2×23443481² = 1099193602794722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_1474382 and since 23443481 and 1474382 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (23443489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11721740 + 11721741.

It is an arithmetic number, because the mean of its divisors is an integer number (11721741).

Almost surely, 2^23443481 is an apocalyptic number.

It is an amenable number.

23443481 is a deficient number, since it is larger than the sum of its proper divisors (1).

23443481 is an equidigital number, since it uses as much as digits as its factorization.

23443481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 29.

The square root of 23443481 is about 4841.8468583796. The cubic root of 23443481 is about 286.2029018066.

The spelling of 23443481 in words is "twenty-three million, four hundred forty-three thousand, four hundred eighty-one".