13621113 has 12 divisors (see below), whose sum is σ = 21463728. Its totient is φ = 8255160.

The previous prime is 13621109. The next prime is 13621123. The reversal of 13621113 is 31112631.

It is not a de Polignac number, because 13621113 - 2² = 13621109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13621123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68695 + ... + 68892.

It is an arithmetic number, because the mean of its divisors is an integer number (1788644).

Almost surely, 2^13621113 is an apocalyptic number.

It is an amenable number.

13621113 is a deficient number, since it is larger than the sum of its proper divisors (7842615).

13621113 is a wasteful number, since it uses less digits than its factorization.

13621113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137604 (or 137601 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 13621113 is about 3690.6792057831. The cubic root of 13621113 is about 238.8200941821.

Adding to 13621113 its reverse (31112631), we get a palindrome (44733744).

It can be divided in two parts, 13 and 621113, that added together give a palindrome (621126).

The spelling of 13621113 in words is "thirteen million, six hundred twenty-one thousand, one hundred thirteen".