1143811227 has 16 divisors (see below), whose sum is σ = 1643201280. Its totient is φ = 703538592.

The previous prime is 1143811211. The next prime is 1143811313. The reversal of 1143811227 is 7221183411.

It is not a de Polignac number, because 1143811227 - 2⁴ = 1143811211 is a prime.

It is a super-2 number, since 2×1143811227² = 2616608246022491058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1143811194 and 1143811203.

It is not an unprimeable number, because it can be changed into a prime (1143811027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89938 + ... + 101864.

It is an arithmetic number, because the mean of its divisors is an integer number (102700080).

Almost surely, 2^1143811227 is an apocalyptic number.

1143811227 is a deficient number, since it is larger than the sum of its proper divisors (499390053).

1143811227 is a wasteful number, since it uses less digits than its factorization.

1143811227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14402.

The product of its digits is 2688, while the sum is 30.

The square root of 1143811227 is about 33820.2783400728. The cubic root of 1143811227 is about 1045.8067766883.

Adding to 1143811227 its reverse (7221183411), we get a palindrome (8364994638).

The spelling of 1143811227 in words is "one billion, one hundred forty-three million, eight hundred eleven thousand, two hundred twenty-seven".