1131522011 has 2 divisors, whose sum is σ = 1131522012. Its totient is φ = 1131522010.

The previous prime is 1131521999. The next prime is 1131522031. The reversal of 1131522011 is 1102251311.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131522011 is a prime.

It is a super-2 number, since 2×1131522011² = 2560684122754968242, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1131522031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565761005 + 565761006.

It is an arithmetic number, because the mean of its divisors is an integer number (565761006).

Almost surely, 2^1131522011 is an apocalyptic number.

1131522011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131522011 is an equidigital number, since it uses as much as digits as its factorization.

1131522011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1131522011 is about 33638.1035583161. The cubic root of 1131522011 is about 1042.0478667057.

Adding to 1131522011 its reverse (1102251311), we get a palindrome (2233773322).

The spelling of 1131522011 in words is "one billion, one hundred thirty-one million, five hundred twenty-two thousand, eleven".