11311129 has 2 divisors, whose sum is σ = 11311130. Its totient is φ = 11311128.

The previous prime is 11311127. The next prime is 11311133. The reversal of 11311129 is 92111311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6901129 + 4410000 = 2627^2 + 2100^2 .

It is an emirp because it is prime and its reverse (92111311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11311129 - 2¹ = 11311127 is a prime.

Together with 11311127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11311123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655564 + 5655565.

It is an arithmetic number, because the mean of its divisors is an integer number (5655565).

Almost surely, 2^11311129 is an apocalyptic number.

It is an amenable number.

11311129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311129 is an equidigital number, since it uses as much as digits as its factorization.

11311129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54, while the sum is 19.

The square root of 11311129 is about 3363.2021943380. The cubic root of 11311129 is about 224.4753471176.

The spelling of 11311129 in words is "eleven million, three hundred eleven thousand, one hundred twenty-nine".