13201923 has 12 divisors (see below), whose sum is σ = 20476680. Its totient is φ = 7543872.

The previous prime is 13201919. The next prime is 13201943. The reversal of 13201923 is 32910231.

It is a happy number.

It is not a de Polignac number, because 13201923 - 2² = 13201919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 13201923.

It is not an unprimeable number, because it can be changed into a prime (13201913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44758 + ... + 45051.

It is an arithmetic number, because the mean of its divisors is an integer number (1706390).

Almost surely, 2^13201923 is an apocalyptic number.

13201923 is a deficient number, since it is larger than the sum of its proper divisors (7274757).

13201923 is an equidigital number, since it uses as much as digits as its factorization.

13201923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89826 (or 89819 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 13201923 is about 3633.4450594443. The cubic root of 13201923 is about 236.3446260172.

The spelling of 13201923 in words is "thirteen million, two hundred one thousand, nine hundred twenty-three".