1131030551 has 32 divisors (see below), whose sum is σ = 1357171200. Its totient is φ = 922521600.

The previous prime is 1131030533. The next prime is 1131030581. The reversal of 1131030551 is 1550301311.

It is not a de Polignac number, because 1131030551 - 2⁶ = 1131030487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131030521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2518775 + ... + 2519223.

It is an arithmetic number, because the mean of its divisors is an integer number (42411600).

Almost surely, 2^1131030551 is an apocalyptic number.

1131030551 is a deficient number, since it is larger than the sum of its proper divisors (226140649).

1131030551 is a wasteful number, since it uses less digits than its factorization.

1131030551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 1131030551 is about 33630.7976563150. The cubic root of 1131030551 is about 1041.8969787860.

Adding to 1131030551 its reverse (1550301311), we get a palindrome (2681331862).

The spelling of 1131030551 in words is "one billion, one hundred thirty-one million, thirty thousand, five hundred fifty-one".