1143256713 has 8 divisors (see below), whose sum is σ = 1524518400. Its totient is φ = 762083088.

The previous prime is 1143256687. The next prime is 1143256721. The reversal of 1143256713 is 3176523411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1143256713 - 2¹⁸ = 1142994569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143256313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19423 + ... + 51611.

It is an arithmetic number, because the mean of its divisors is an integer number (190564800).

Almost surely, 2^1143256713 is an apocalyptic number.

It is an amenable number.

1143256713 is a deficient number, since it is larger than the sum of its proper divisors (381261687).

1143256713 is a wasteful number, since it uses less digits than its factorization.

1143256713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44031.

The product of its digits is 15120, while the sum is 33.

The square root of 1143256713 is about 33812.0793947962. The cubic root of 1143256713 is about 1045.6377487276.

The spelling of 1143256713 in words is "one billion, one hundred forty-three million, two hundred fifty-six thousand, seven hundred thirteen".