13981073 has 4 divisors (see below), whose sum is σ = 14064960. Its totient is φ = 13897188.

The previous prime is 13981027. The next prime is 13981111. The reversal of 13981073 is 37018931.

13981073 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37018931 = 5827 ⋅6353.

It is a cyclic number.

It is not a de Polignac number, because 13981073 - 2¹⁰ = 13980049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13981013) 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, 41693 + ... + 42026.

It is an arithmetic number, because the mean of its divisors is an integer number (3516240).

Almost surely, 2^13981073 is an apocalyptic number.

It is an amenable number.

13981073 is a deficient number, since it is larger than the sum of its proper divisors (83887).

13981073 is an equidigital number, since it uses as much as digits as its factorization.

13981073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83886.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 13981073 is about 3739.1273045993. The cubic root of 13981073 is about 240.9055660962.

The spelling of 13981073 in words is "thirteen million, nine hundred eighty-one thousand, seventy-three".