1131145051 has 2 divisors, whose sum is σ = 1131145052. Its totient is φ = 1131145050.

The previous prime is 1131145049. The next prime is 1131145061. The reversal of 1131145051 is 1505411311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131145051 - 2¹ = 1131145049 is a prime.

Together with 1131145049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1131145061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565572525 + 565572526.

It is an arithmetic number, because the mean of its divisors is an integer number (565572526).

Almost surely, 2^1131145051 is an apocalyptic number.

1131145051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131145051 is an equidigital number, since it uses as much as digits as its factorization.

1131145051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 1131145051 is about 33632.4999219505. The cubic root of 1131145051 is about 1041.9321364507.

Adding to 1131145051 its reverse (1505411311), we get a palindrome (2636556362).

The spelling of 1131145051 in words is "one billion, one hundred thirty-one million, one hundred forty-five thousand, fifty-one".