1143451203 has 24 divisors (see below), whose sum is σ = 1587522048. Its totient is φ = 731751072.

The previous prime is 1143451193. The next prime is 1143451223. The reversal of 1143451203 is 3021543411.

It is a happy number.

It is not a de Polignac number, because 1143451203 - 2¹⁰ = 1143450179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143451223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 394626 + ... + 397512.

It is an arithmetic number, because the mean of its divisors is an integer number (66146752).

Almost surely, 2^1143451203 is an apocalyptic number.

1143451203 is a deficient number, since it is larger than the sum of its proper divisors (444070845).

1143451203 is an equidigital number, since it uses as much as digits as its factorization.

1143451203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043 (or 2990 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1143451203 is about 33814.9553156588. The cubic root of 1143451203 is about 1045.6970397431.

Adding to 1143451203 its reverse (3021543411), we get a palindrome (4164994614).

The spelling of 1143451203 in words is "one billion, one hundred forty-three million, four hundred fifty-one thousand, two hundred three".