1143212423 has 2 divisors, whose sum is σ = 1143212424. Its totient is φ = 1143212422.

The previous prime is 1143212417. The next prime is 1143212459. The reversal of 1143212423 is 3242123411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143212423 - 2⁶ = 1143212359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143217423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571606211 + 571606212.

It is an arithmetic number, because the mean of its divisors is an integer number (571606212).

Almost surely, 2^1143212423 is an apocalyptic number.

1143212423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143212423 is an equidigital number, since it uses as much as digits as its factorization.

1143212423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 1143212423 is about 33811.4244450008. The cubic root of 1143212423 is about 1045.6242458128.

Adding to 1143212423 its reverse (3242123411), we get a palindrome (4385335834).

The spelling of 1143212423 in words is "one billion, one hundred forty-three million, two hundred twelve thousand, four hundred twenty-three".