1131063691 has 2 divisors, whose sum is σ = 1131063692. Its totient is φ = 1131063690.

The previous prime is 1131063667. The next prime is 1131063707. The reversal of 1131063691 is 1963601311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131063691 - 2²¹ = 1128966539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131063611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565531845 + 565531846.

It is an arithmetic number, because the mean of its divisors is an integer number (565531846).

Almost surely, 2^1131063691 is an apocalyptic number.

1131063691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131063691 is an equidigital number, since it uses as much as digits as its factorization.

1131063691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 1131063691 is about 33631.2903558576. The cubic root of 1131063691 is about 1041.9071547942.

The spelling of 1131063691 in words is "one billion, one hundred thirty-one million, sixty-three thousand, six hundred ninety-one".