1143029971 has 2 divisors, whose sum is σ = 1143029972. Its totient is φ = 1143029970.

The previous prime is 1143029963. The next prime is 1143030001. The reversal of 1143029971 is 1799203411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143029971 - 2³ = 1143029963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1143029971.

It is not a weakly prime, because it can be changed into another prime (1143009971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571514985 + 571514986.

It is an arithmetic number, because the mean of its divisors is an integer number (571514986).

Almost surely, 2^1143029971 is an apocalyptic number.

1143029971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143029971 is an equidigital number, since it uses as much as digits as its factorization.

1143029971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1143029971 is about 33808.7262552141. The cubic root of 1143029971 is about 1045.5686170772.

The spelling of 1143029971 in words is "one billion, one hundred forty-three million, twenty-nine thousand, nine hundred seventy-one".