13113131 has 8 divisors (see below), whose sum is σ = 13393920. Its totient is φ = 12835368.

The previous prime is 13113127. The next prime is 13113143. The reversal of 13113131 is 13131131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13113131 - 2² = 13113127 is a prime.

It is a super-2 number, since 2×13113131² = 343908409246322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13113161) 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 7 ways as a sum of consecutive naturals, for example, 9380 + ... + 10686.

It is an arithmetic number, because the mean of its divisors is an integer number (1674240).

Almost surely, 2^13113131 is an apocalyptic number.

13113131 is a deficient number, since it is larger than the sum of its proper divisors (280789).

13113131 is a wasteful number, since it uses less digits than its factorization.

13113131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513.

The product of its digits is 27, while the sum is 14.

The square root of 13113131 is about 3621.2057384247. The cubic root of 13113131 is about 235.8135736863.

Adding to 13113131 its reverse (13131131), we get a palindrome (26244262).

The spelling of 13113131 in words is "thirteen million, one hundred thirteen thousand, one hundred thirty-one".