1113131 has 4 divisors (see below), whose sum is σ = 1161552. Its totient is φ = 1064712.

The previous prime is 1113103. The next prime is 1113137. The reversal of 1113131 is 1313111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1313111 = 631 ⋅2081.

It is a cyclic number.

It is not a de Polignac number, because 1113131 - 2¹⁰ = 1112107 is a prime.

It is a super-2 number, since 2×1113131² = 2478121246322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113137) 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 3 ways as a sum of consecutive naturals, for example, 24176 + ... + 24221.

It is an arithmetic number, because the mean of its divisors is an integer number (290388).

2^1113131 is an apocalyptic number.

1113131 is a deficient number, since it is larger than the sum of its proper divisors (48421).

1113131 is an equidigital number, since it uses as much as digits as its factorization.

1113131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48420.

The product of its digits is 9, while the sum is 11.

The square root of 1113131 is about 1055.0502357708. The cubic root of 1113131 is about 103.6371415156.

Adding to 1113131 its reverse (1313111), we get a palindrome (2426242).

It can be divided in two parts, 11 and 13131, that multiplied together give a palindrome (144441).

The spelling of 1113131 in words is "one million, one hundred thirteen thousand, one hundred thirty-one".