1143023611 has 12 divisors (see below), whose sum is σ = 1215739648. Its totient is φ = 1074436992.

The previous prime is 1143023591. The next prime is 1143023621. The reversal of 1143023611 is 1163203411.

It is not a de Polignac number, because 1143023611 - 2⁹ = 1143023099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143023621) 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, 286150 + ... + 290116.

Almost surely, 2^1143023611 is an apocalyptic number.

1143023611 is a deficient number, since it is larger than the sum of its proper divisors (72716037).

1143023611 is an equidigital number, since it uses as much as digits as its factorization.

1143023611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998 (or 4981 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1143023611 is about 33808.6321965264. The cubic root of 1143023611 is about 1045.5666778370.

The spelling of 1143023611 in words is "one billion, one hundred forty-three million, twenty-three thousand, six hundred eleven".