1311124133 has 16 divisors (see below), whose sum is σ = 1566682560. Its totient is φ = 1083129600.

The previous prime is 1311124121. The next prime is 1311124141. The reversal of 1311124133 is 3314211131.

It is a cyclic number.

It is not a de Polignac number, because 1311124133 - 2¹⁶ = 1311058597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311124103) 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, 115463 + ... + 126308.

It is an arithmetic number, because the mean of its divisors is an integer number (97917660).

Almost surely, 2^1311124133 is an apocalyptic number.

It is an amenable number.

1311124133 is a deficient number, since it is larger than the sum of its proper divisors (255558427).

1311124133 is a wasteful number, since it uses less digits than its factorization.

1311124133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241828.

The product of its digits is 216, while the sum is 20.

The square root of 1311124133 is about 36209.4481178601. The cubic root of 1311124133 is about 1094.4970711558.

Adding to 1311124133 its reverse (3314211131), we get a palindrome (4625335264).

The spelling of 1311124133 in words is "one billion, three hundred eleven million, one hundred twenty-four thousand, one hundred thirty-three".