13121337 has 8 divisors (see below), whose sum is σ = 17603104. Its totient is φ = 8693568.

The previous prime is 13121327. The next prime is 13121341. The reversal of 13121337 is 73312131.

13121337 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13121337 - 2⁷ = 13121209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12928 + ... + 13905.

It is an arithmetic number, because the mean of its divisors is an integer number (2200388).

Almost surely, 2^13121337 is an apocalyptic number.

It is an amenable number.

13121337 is a deficient number, since it is larger than the sum of its proper divisors (4481767).

13121337 is a wasteful number, since it uses less digits than its factorization.

13121337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26999.

The product of its digits is 378, while the sum is 21.

The square root of 13121337 is about 3622.3386092413. The cubic root of 13121337 is about 235.8627529575.

Adding to 13121337 its reverse (73312131), we get a palindrome (86433468).

The spelling of 13121337 in words is "thirteen million, one hundred twenty-one thousand, three hundred thirty-seven".