23478913 has 4 divisors (see below), whose sum is σ = 23493568. Its totient is φ = 23464260.

The previous prime is 23478911. The next prime is 23478941. The reversal of 23478913 is 31987432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23478913 - 2¹ = 23478911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23478911) 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, 4581 + ... + 8242.

It is an arithmetic number, because the mean of its divisors is an integer number (5873392).

Almost surely, 2^23478913 is an apocalyptic number.

It is an amenable number.

23478913 is a deficient number, since it is larger than the sum of its proper divisors (14655).

23478913 is a wasteful number, since it uses less digits than its factorization.

23478913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14654.

The product of its digits is 36288, while the sum is 37.

The square root of 23478913 is about 4845.5044113075. The cubic root of 23478913 is about 286.3470163072.

The spelling of 23478913 in words is "twenty-three million, four hundred seventy-eight thousand, nine hundred thirteen".