11113131 has 8 divisors (see below), whose sum is σ = 14964624. Its totient is φ = 7335200.

The previous prime is 11113129. The next prime is 11113153. The reversal of 11113131 is 13131111.

11113131 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 11113131 - 2¹ = 11113129 is a prime.

It is a super-2 number, since 2×11113131² = 247003361246322, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (11113111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18036 + ... + 18641.

It is an arithmetic number, because the mean of its divisors is an integer number (1870578).

Almost surely, 2^11113131 is an apocalyptic number.

11113131 is a deficient number, since it is larger than the sum of its proper divisors (3851493).

11113131 is a wasteful number, since it uses less digits than its factorization.

11113131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36781.

The product of its digits is 9, while the sum is 12.

The square root of 11113131 is about 3333.6363028981. The cubic root of 11113131 is about 223.1578376765.

Adding to 11113131 its reverse (13131111), we get a palindrome (24244242).

It can be divided in two parts, 111 and 13131, that multiplied together give a palindrome (1457541).

The spelling of 11113131 in words is "eleven million, one hundred thirteen thousand, one hundred thirty-one".