1131004043 has 8 divisors (see below), whose sum is σ = 1226072736. Its totient is φ = 1037088000.

The previous prime is 1131004037. The next prime is 1131004057. The reversal of 1131004043 is 3404001311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1131004043 - 2⁴ = 1131004027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131000043) 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 7 ways as a sum of consecutive naturals, for example, 286118 + ... + 290043.

It is an arithmetic number, because the mean of its divisors is an integer number (153259092).

Almost surely, 2^1131004043 is an apocalyptic number.

1131004043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1131004043 is a deficient number, since it is larger than the sum of its proper divisors (95068693).

1131004043 is a wasteful number, since it uses less digits than its factorization.

1131004043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576325.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1131004043 is about 33630.4035509537. The cubic root of 1131004043 is about 1041.8888390645. Note that the first 4 decimals are identical.

Adding to 1131004043 its reverse (3404001311), we get a palindrome (4535005354).

The spelling of 1131004043 in words is "one billion, one hundred thirty-one million, four thousand, forty-three".