13112155 has 24 divisors (see below), whose sum is σ = 18509040. Its totient is φ = 8890560.

The previous prime is 13112153. The next prime is 13112159. The reversal of 13112155 is 55121131.

It is not a de Polignac number, because 13112155 - 2¹ = 13112153 is a prime.

It is a super-3 number, since 3×13112155³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (13112153) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 26460 + ... + 26950.

It is an arithmetic number, because the mean of its divisors is an integer number (771210).

Almost surely, 2^13112155 is an apocalyptic number.

13112155 is a deficient number, since it is larger than the sum of its proper divisors (5396885).

13112155 is a wasteful number, since it uses less digits than its factorization.

13112155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 612 counting only the distinct ones).

The product of its digits is 150, while the sum is 19.

The square root of 13112155 is about 3621.0709741732. The cubic root of 13112155 is about 235.8077230684.

Adding to 13112155 its reverse (55121131), we get a palindrome (68233286).

The spelling of 13112155 in words is "thirteen million, one hundred twelve thousand, one hundred fifty-five".