1143310279 has 2 divisors, whose sum is σ = 1143310280. Its totient is φ = 1143310278.

The previous prime is 1143310253. The next prime is 1143310291. The reversal of 1143310279 is 9720133411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1143310279 - 2⁹ = 1143309767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1143310279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143310879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571655139 + 571655140.

It is an arithmetic number, because the mean of its divisors is an integer number (571655140).

Almost surely, 2^1143310279 is an apocalyptic number.

1143310279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143310279 is an equidigital number, since it uses as much as digits as its factorization.

1143310279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1143310279 is about 33812.8714988834. The cubic root of 1143310279 is about 1045.6540791971.

It can be divided in two parts, 11433 and 10279, that added together give a palindrome (21712).

The spelling of 1143310279 in words is "one billion, one hundred forty-three million, three hundred ten thousand, two hundred seventy-nine".