1311092129 has 2 divisors, whose sum is σ = 1311092130. Its totient is φ = 1311092128.

The previous prime is 1311092051. The next prime is 1311092141. The reversal of 1311092129 is 9212901131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1306461025 + 4631104 = 36145^2 + 2152^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311092129 - 2²⁴ = 1294314913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311092149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655546064 + 655546065.

It is an arithmetic number, because the mean of its divisors is an integer number (655546065).

Almost surely, 2^1311092129 is an apocalyptic number.

It is an amenable number.

1311092129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311092129 is an equidigital number, since it uses as much as digits as its factorization.

1311092129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 1311092129 is about 36209.0061863067. The cubic root of 1311092129 is about 1094.4881656758.

The spelling of 1311092129 in words is "one billion, three hundred eleven million, ninety-two thousand, one hundred twenty-nine".