1131311711 has 2 divisors, whose sum is σ = 1131311712. Its totient is φ = 1131311710.

The previous prime is 1131311707. The next prime is 1131311723. The reversal of 1131311711 is 1171131311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131311711 - 2² = 1131311707 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131311771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565655855 + 565655856.

It is an arithmetic number, because the mean of its divisors is an integer number (565655856).

Almost surely, 2^1131311711 is an apocalyptic number.

1131311711 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131311711 is an equidigital number, since it uses as much as digits as its factorization.

1131311711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63, while the sum is 20.

The square root of 1131311711 is about 33634.9774936746. The cubic root of 1131311711 is about 1041.9833058040.

The spelling of 1131311711 in words is "one billion, one hundred thirty-one million, three hundred eleven thousand, seven hundred eleven".