1131214311 has 6 divisors (see below), whose sum is σ = 1633976240. Its totient is φ = 754142868.

The previous prime is 1131214309. The next prime is 1131214319. The reversal of 1131214311 is 1134121311.

It is a happy number.

1131214311 is a `hidden beast` number, since 113 + 121 + 431 + 1 = 666.

It is not a de Polignac number, because 1131214311 - 2¹ = 1131214309 is a prime.

It is a super-2 number, since 2×1131214311² = 2559291634822409442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131214319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62845231 + ... + 62845248.

Almost surely, 2^1131214311 is an apocalyptic number.

1131214311 is a deficient number, since it is larger than the sum of its proper divisors (502761929).

1131214311 is a wasteful number, since it uses less digits than its factorization.

1131214311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125690485 (or 125690482 counting only the distinct ones).

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

The square root of 1131214311 is about 33633.5295650040. The cubic root of 1131214311 is about 1041.9534018480.

Adding to 1131214311 its reverse (1134121311), we get a palindrome (2265335622).

The spelling of 1131214311 in words is "one billion, one hundred thirty-one million, two hundred fourteen thousand, three hundred eleven".