23913387 has 14 divisors (see below), whose sum is σ = 35854772. Its totient is φ = 15941772.

The previous prime is 23913377. The next prime is 23913397. The reversal of 23913387 is 78331932.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23913377) and next prime (23913397).

It is not a de Polignac number, because 23913387 - 2¹¹ = 23911339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23913317) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 15673 + ... + 17130.

Almost surely, 2^23913387 is an apocalyptic number.

23913387 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

23913387 is a deficient number, since it is larger than the sum of its proper divisors (11941385).

23913387 is an frugal number, since it uses more digits than its factorization.

23913387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32821 (or 32806 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 23913387 is about 4890.1315933214. The cubic root of 23913387 is about 288.1025025763.

It can be divided in two parts, 2391 and 3387, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 23913387 in words is "twenty-three million, nine hundred thirteen thousand, three hundred eighty-seven".