1131012043 has 4 divisors (see below), whose sum is σ = 1292585200. Its totient is φ = 969438888.

The previous prime is 1131012017. The next prime is 1131012053. The reversal of 1131012043 is 3402101311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131012043 - 2⁵ = 1131012011 is a prime.

It is a super-2 number, since 2×1131012043² = 2558376482822067698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131012053) 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 in 3 ways as a sum of consecutive naturals, for example, 80786568 + ... + 80786581.

It is an arithmetic number, because the mean of its divisors is an integer number (323146300).

Almost surely, 2^1131012043 is an apocalyptic number.

1131012043 is a deficient number, since it is larger than the sum of its proper divisors (161573157).

1131012043 is an equidigital number, since it uses as much as digits as its factorization.

1131012043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161573156.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1131012043 is about 33630.5224907375. The cubic root of 1131012043 is about 1041.8912956107.

Adding to 1131012043 its reverse (3402101311), we get a palindrome (4533113354).

The spelling of 1131012043 in words is "one billion, one hundred thirty-one million, twelve thousand, forty-three".