1143031404 has 48 divisors (see below), whose sum is σ = 2763421920. Its totient is φ = 367288320.

The previous prime is 1143031387. The next prime is 1143031427. The reversal of 1143031404 is 4041303411.

It is a super-2 number, since 2×1143031404² = 2613041581060422432, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252844 + ... + 257324.

It is an arithmetic number, because the mean of its divisors is an integer number (57571290).

Almost surely, 2^1143031404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143031404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381710960).

1143031404 is an abundant number, since it is smaller than the sum of its proper divisors (1620390516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143031404 is a wasteful number, since it uses less digits than its factorization.

1143031404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250 (or 5248 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1143031404 is about 33808.7474479609. The cubic root of 1143031404 is about 1045.5690540150.

Adding to 1143031404 its reverse (4041303411), we get a palindrome (5184334815).

The spelling of 1143031404 in words is "one billion, one hundred forty-three million, thirty-one thousand, four hundred four".