23401305 has 20 divisors (see below), whose sum is σ = 41949732. Its totient is φ = 12480480.

The previous prime is 23401303. The next prime is 23401307. The reversal of 23401305 is 50310432.

It is an interprime number because it is at equal distance from previous prime (23401303) and next prime (23401307).

It can be written as a sum of positive squares in 2 ways, for example, as 13816089 + 9585216 = 3717^2 + 3096^2 .

It is not a de Polignac number, because 23401305 - 2¹ = 23401303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23401303) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28486 + ... + 29295.

Almost surely, 2^23401305 is an apocalyptic number.

It is an amenable number.

23401305 is a deficient number, since it is larger than the sum of its proper divisors (18548427).

23401305 is an equidigital number, since it uses as much as digits as its factorization.

23401305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57798 (or 57789 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 23401305 is about 4837.4895348724. The cubic root of 23401305 is about 286.0311676467.

Adding to 23401305 its reverse (50310432), we get a palindrome (73711737).

The spelling of 23401305 in words is "twenty-three million, four hundred one thousand, three hundred five".