1311124429 has 2 divisors, whose sum is σ = 1311124430. Its totient is φ = 1311124428.

The previous prime is 1311124421. The next prime is 1311124483. The reversal of 1311124429 is 9244211131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1272348900 + 38775529 = 35670^2 + 6227^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311124429 - 2³ = 1311124421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311124397 and 1311124406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311124421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655562214 + 655562215.

It is an arithmetic number, because the mean of its divisors is an integer number (655562215).

Almost surely, 2^1311124429 is an apocalyptic number.

It is an amenable number.

1311124429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311124429 is an equidigital number, since it uses as much as digits as its factorization.

1311124429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 1311124429 is about 36209.4522051908. The cubic root of 1311124429 is about 1094.4971535205.

The spelling of 1311124429 in words is "one billion, three hundred eleven million, one hundred twenty-four thousand, four hundred twenty-nine".