1143320229 has 12 divisors (see below), whose sum is σ = 1654039296. Its totient is φ = 761024232.

The previous prime is 1143320221. The next prime is 1143320251. The reversal of 1143320229 is 9220233411.

It is a happy number.

1143320229 is a `hidden beast` number, since 1 + 1 + 433 + 2 + 0 + 229 = 666.

It is not a de Polignac number, because 1143320229 - 2³ = 1143320221 is a prime.

It is a super-2 number, since 2×1143320229² = 2614362292081224882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143320221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92997 + ... + 104570.

It is an arithmetic number, because the mean of its divisors is an integer number (137836608).

Almost surely, 2^1143320229 is an apocalyptic number.

It is an amenable number.

1143320229 is a deficient number, since it is larger than the sum of its proper divisors (510719067).

1143320229 is a wasteful number, since it uses less digits than its factorization.

1143320229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198216 (or 198213 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1143320229 is about 33813.0186318820. The cubic root of 1143320229 is about 1045.6571125609.

The spelling of 1143320229 in words is "one billion, one hundred forty-three million, three hundred twenty thousand, two hundred twenty-nine".