23901481 has 4 divisors (see below), whose sum is σ = 24725700. Its totient is φ = 23077264.

The previous prime is 23901469. The next prime is 23901497. The reversal of 23901481 is 18410932.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15139881 + 8761600 = 3891^2 + 2960^2 .

It is a cyclic number.

It is not a de Polignac number, because 23901481 - 2²¹ = 21804329 is a prime.

It is a super-2 number, since 2×23901481² = 1142561587986722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23901461) 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 in 3 ways as a sum of consecutive naturals, for example, 412066 + ... + 412123.

It is an arithmetic number, because the mean of its divisors is an integer number (6181425).

Almost surely, 2^23901481 is an apocalyptic number.

It is an amenable number.

23901481 is a deficient number, since it is larger than the sum of its proper divisors (824219).

23901481 is an equidigital number, since it uses as much as digits as its factorization.

23901481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824218.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 23901481 is about 4888.9140921068. The cubic root of 23901481 is about 288.0546811361.

The spelling of 23901481 in words is "twenty-three million, nine hundred one thousand, four hundred eighty-one".