13115312 has 20 divisors (see below), whose sum is σ = 29041296. Its totient is φ = 5620800.

The previous prime is 13115293. The next prime is 13115321. The reversal of 13115312 is 21351131.

It is a super-2 number, since 2×13115312² = 344022817714688, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 58439 + ... + 58662.

Almost surely, 2^13115312 is an apocalyptic number.

It is an amenable number.

13115312 is an abundant number, since it is smaller than the sum of its proper divisors (15925984).

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

13115312 is a wasteful number, since it uses less digits than its factorization.

13115312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117116 (or 117110 counting only the distinct ones).

The product of its digits is 90, while the sum is 17.

The square root of 13115312 is about 3621.5068686943. The cubic root of 13115312 is about 235.8266466103.

Adding to 13115312 its reverse (21351131), we get a palindrome (34466443).

The spelling of 13115312 in words is "thirteen million, one hundred fifteen thousand, three hundred twelve".