23681959 has 4 divisors (see below), whose sum is σ = 27065104. Its totient is φ = 20298816.

The previous prime is 23681947. The next prime is 23681971. The reversal of 23681959 is 95918632.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (23681947) and next prime (23681971).

It is a cyclic number.

It is not a de Polignac number, because 23681959 - 2¹¹ = 23679911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23681929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691562 + ... + 1691575.

It is an arithmetic number, because the mean of its divisors is an integer number (6766276).

Almost surely, 2^23681959 is an apocalyptic number.

23681959 is a deficient number, since it is larger than the sum of its proper divisors (3383145).

23681959 is an equidigital number, since it uses as much as digits as its factorization.

23681959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383144.

The product of its digits is 116640, while the sum is 43.

The square root of 23681959 is about 4866.4113060858. The cubic root of 23681959 is about 287.1700926524.

The spelling of 23681959 in words is "twenty-three million, six hundred eighty-one thousand, nine hundred fifty-nine".