1113121131 has 16 divisors (see below), whose sum is σ = 1508683680. Its totient is φ = 729907200.

The previous prime is 1113121129. The next prime is 1113121159. The reversal of 1113121131 is 1311213111.

It is not a de Polignac number, because 1113121131 - 2¹ = 1113121129 is a prime.

It is a super-2 number, since 2×1113121131² = 2478077304557438322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1113121131.

It is not an unprimeable number, because it can be changed into a prime (1113121111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40731 + ... + 62331.

It is an arithmetic number, because the mean of its divisors is an integer number (94292730).

Almost surely, 2^1113121131 is an apocalyptic number.

1113121131 is a deficient number, since it is larger than the sum of its proper divisors (395562549).

1113121131 is a wasteful number, since it uses less digits than its factorization.

1113121131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21886.

The product of its digits is 18, while the sum is 15.

The square root of 1113121131 is about 33363.4700083789. The cubic root of 1113121131 is about 1036.3683523296.

Adding to 1113121131 its reverse (1311213111), we get a palindrome (2424334242).

The spelling of 1113121131 in words is "one billion, one hundred thirteen million, one hundred twenty-one thousand, one hundred thirty-one".