1143215471 has 2 divisors, whose sum is σ = 1143215472. Its totient is φ = 1143215470.

The previous prime is 1143215449. The next prime is 1143215531. The reversal of 1143215471 is 1745123411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143215471 - 2²² = 1139021167 is a prime.

It is a super-3 number, since 3×1143215471³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143215401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571607735 + 571607736.

It is an arithmetic number, because the mean of its divisors is an integer number (571607736).

Almost surely, 2^1143215471 is an apocalyptic number.

1143215471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143215471 is an equidigital number, since it uses as much as digits as its factorization.

1143215471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 29.

The square root of 1143215471 is about 33811.4695184933. The cubic root of 1143215471 is about 1045.6251750830.

Adding to 1143215471 its reverse (1745123411), we get a palindrome (2888338882).

The spelling of 1143215471 in words is "one billion, one hundred forty-three million, two hundred fifteen thousand, four hundred seventy-one".