1143475227 has 12 divisors (see below), whose sum is σ = 1658778264. Its totient is φ = 759043680.

The previous prime is 1143475217. The next prime is 1143475231. The reversal of 1143475227 is 7225743411.

It is not a de Polignac number, because 1143475227 - 2⁴ = 1143475211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1143475191 and 1143475200.

It is not an unprimeable number, because it can be changed into a prime (1143475217) 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, 270549 + ... + 274742.

It is an arithmetic number, because the mean of its divisors is an integer number (138231522).

Almost surely, 2^1143475227 is an apocalyptic number.

1143475227 is a deficient number, since it is larger than the sum of its proper divisors (515303037).

1143475227 is a wasteful number, since it uses less digits than its factorization.

1143475227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545530 (or 545527 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 1143475227 is about 33815.3105412327. The cubic root of 1143475227 is about 1045.7043630843.

The spelling of 1143475227 in words is "one billion, one hundred forty-three million, four hundred seventy-five thousand, two hundred twenty-seven".