1011311129 has 2 divisors, whose sum is σ = 1011311130. Its totient is φ = 1011311128.

The previous prime is 1011311083. The next prime is 1011311141. The reversal of 1011311129 is 9211131101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510760000 + 500551129 = 22600^2 + 22373^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011311129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011311129.

It is not a weakly prime, because it can be changed into another prime (1011313129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505655564 + 505655565.

It is an arithmetic number, because the mean of its divisors is an integer number (505655565).

Almost surely, 2^1011311129 is an apocalyptic number.

It is an amenable number.

1011311129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011311129 is an equidigital number, since it uses as much as digits as its factorization.

1011311129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 20.

The square root of 1011311129 is about 31801.1183608376. The cubic root of 1011311129 is about 1003.7562492587.

The spelling of 1011311129 in words is "one billion, eleven million, three hundred eleven thousand, one hundred twenty-nine".