13247923 has 4 divisors (see below), whose sum is σ = 14267008. Its totient is φ = 12228840.

The previous prime is 13247911. The next prime is 13247939. The reversal of 13247923 is 32974231.

13247923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13247923 - 2¹³ = 13239731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13247903) 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, 509523 + ... + 509548.

It is an arithmetic number, because the mean of its divisors is an integer number (3566752).

Almost surely, 2^13247923 is an apocalyptic number.

13247923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13247923 is a deficient number, since it is larger than the sum of its proper divisors (1019085).

13247923 is a wasteful number, since it uses less digits than its factorization.

13247923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019084.

The product of its digits is 9072, while the sum is 31.

The square root of 13247923 is about 3639.7696355676. The cubic root of 13247923 is about 236.6188095611.

The spelling of 13247923 in words is "thirteen million, two hundred forty-seven thousand, nine hundred twenty-three".