13626331 has 4 divisors (see below), whose sum is σ = 13747032. Its totient is φ = 13505632.

The previous prime is 13626257. The next prime is 13626407. The reversal of 13626331 is 13362631.

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

It is a cyclic number.

It is not a de Polignac number, because 13626331 - 2⁷ = 13626203 is a prime.

It is a super-2 number, since 2×13626331² = 371353793043122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13626296 and 13626305.

It is not an unprimeable number, because it can be changed into a prime (13626731) 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, 60181 + ... + 60406.

It is an arithmetic number, because the mean of its divisors is an integer number (3436758).

Almost surely, 2^13626331 is an apocalyptic number.

13626331 is a deficient number, since it is larger than the sum of its proper divisors (120701).

13626331 is a wasteful number, since it uses less digits than its factorization.

13626331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120700.

The product of its digits is 1944, while the sum is 25.

The square root of 13626331 is about 3691.3860540453. The cubic root of 13626331 is about 238.8505861631.

Adding to 13626331 its reverse (13362631), we get a palindrome (26988962).

The spelling of 13626331 in words is "thirteen million, six hundred twenty-six thousand, three hundred thirty-one".