13561312 has 12 divisors (see below), whose sum is σ = 26698896. Its totient is φ = 6780640.

The previous prime is 13561309. The next prime is 13561313. The reversal of 13561312 is 21316531.

It is a happy number.

It is a super-2 number, since 2×13561312² = 367818366322688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13561313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211864 + ... + 211927.

It is an arithmetic number, because the mean of its divisors is an integer number (2224908).

Almost surely, 2^13561312 is an apocalyptic number.

It is an amenable number.

13561312 is a deficient number, since it is larger than the sum of its proper divisors (13137584).

13561312 is an equidigital number, since it uses as much as digits as its factorization.

13561312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423801 (or 423793 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 13561312 is about 3682.5686687420. The cubic root of 13561312 is about 238.4700828444.

Adding to 13561312 its reverse (21316531), we get a palindrome (34877843).

The spelling of 13561312 in words is "thirteen million, five hundred sixty-one thousand, three hundred twelve".