1131214131 has 12 divisors (see below), whose sum is σ = 1658364552. Its totient is φ = 742886496.

The previous prime is 1131214127. The next prime is 1131214141. The reversal of 1131214131 is 1314121311.

It is a happy number.

It is not a de Polignac number, because 1131214131 - 2² = 1131214127 is a prime.

It is a super-2 number, since 2×1131214131² = 2559290820348170322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131214111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 937386 + ... + 938591.

It is an arithmetic number, because the mean of its divisors is an integer number (138197046).

Almost surely, 2^1131214131 is an apocalyptic number.

1131214131 is a deficient number, since it is larger than the sum of its proper divisors (527150421).

1131214131 is a wasteful number, since it uses less digits than its factorization.

1131214131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876050 (or 1876047 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1131214131 is about 33633.5268891028. The cubic root of 1131214131 is about 1041.9533465824.

Adding to 1131214131 its reverse (1314121311), we get a palindrome (2445335442).

The spelling of 1131214131 in words is "one billion, one hundred thirty-one million, two hundred fourteen thousand, one hundred thirty-one".