1131333811 has 2 divisors, whose sum is σ = 1131333812. Its totient is φ = 1131333810.

The previous prime is 1131333751. The next prime is 1131333817. The reversal of 1131333811 is 1183331311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131333811 - 2¹⁵ = 1131301043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131333817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565666905 + 565666906.

It is an arithmetic number, because the mean of its divisors is an integer number (565666906).

Almost surely, 2^1131333811 is an apocalyptic number.

1131333811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131333811 is an equidigital number, since it uses as much as digits as its factorization.

1131333811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

The square root of 1131333811 is about 33635.3060191222. The cubic root of 1131333811 is about 1041.9900907542.

The spelling of 1131333811 in words is "one billion, one hundred thirty-one million, three hundred thirty-three thousand, eight hundred eleven".