1131513033 has 16 divisors (see below), whose sum is σ = 1753436160. Its totient is φ = 635619216.

The previous prime is 1131513011. The next prime is 1131513077. The reversal of 1131513033 is 3303151311.

It is not a de Polignac number, because 1131513033 - 2⁵ = 1131513001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1131513133) 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 15 ways as a sum of consecutive naturals, for example, 455385 + ... + 457862.

It is an arithmetic number, because the mean of its divisors is an integer number (109589760).

Almost surely, 2^1131513033 is an apocalyptic number.

It is an amenable number.

1131513033 is a deficient number, since it is larger than the sum of its proper divisors (621923127).

1131513033 is an equidigital number, since it uses as much as digits as its factorization.

1131513033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913316.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 1131513033 is about 33637.9701081977. The cubic root of 1131513033 is about 1042.0451106743.

Adding to 1131513033 its reverse (3303151311), we get a palindrome (4434664344).

The spelling of 1131513033 in words is "one billion, one hundred thirty-one million, five hundred thirteen thousand, thirty-three".