13311620 has 24 divisors (see below), whose sum is σ = 31948224. Its totient is φ = 4563936.

The previous prime is 13311619. The next prime is 13311637. The reversal of 13311620 is 2611331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47402 + ... + 47681.

It is an arithmetic number, because the mean of its divisors is an integer number (1331176).

Almost surely, 2^13311620 is an apocalyptic number.

13311620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13311620 is an abundant number, since it is smaller than the sum of its proper divisors (18636604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13311620 is a wasteful number, since it uses less digits than its factorization.

13311620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95099 (or 95097 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 13311620 is about 3648.5092846257. The cubic root of 13311620 is about 236.9974303460.

Adding to 13311620 its reverse (2611331), we get a palindrome (15922951).

It can be divided in two parts, 13311 and 620, that added together give a palindrome (13931).

The spelling of 13311620 in words is "thirteen million, three hundred eleven thousand, six hundred twenty".