1311130129 has 2 divisors, whose sum is σ = 1311130130. Its totient is φ = 1311130128.

The previous prime is 1311130127. The next prime is 1311130201. The reversal of 1311130129 is 9210311131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1279993729 + 31136400 = 35777^2 + 5580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311130129 - 2¹ = 1311130127 is a prime.

Together with 1311130127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1311130127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655565064 + 655565065.

It is an arithmetic number, because the mean of its divisors is an integer number (655565065).

Almost surely, 2^1311130129 is an apocalyptic number.

It is an amenable number.

1311130129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311130129 is an equidigital number, since it uses as much as digits as its factorization.

1311130129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1311130129 is about 36209.5309138354. The cubic root of 1311130129 is about 1094.4987395954.

The spelling of 1311130129 in words is "one billion, three hundred eleven million, one hundred thirty thousand, one hundred twenty-nine".