1143401253 has 8 divisors (see below), whose sum is σ = 1546007616. Its totient is φ = 751531200.

The previous prime is 1143401239. The next prime is 1143401257. The reversal of 1143401253 is 3521043411.

It is a happy number.

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

It is not a de Polignac number, because 1143401253 - 2⁸ = 1143400997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143401257) 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, 2683828 + ... + 2684253.

It is an arithmetic number, because the mean of its divisors is an integer number (193250952).

Almost surely, 2^1143401253 is an apocalyptic number.

It is an amenable number.

1143401253 is a deficient number, since it is larger than the sum of its proper divisors (402606363).

1143401253 is an equidigital number, since it uses as much as digits as its factorization.

1143401253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368155.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1143401253 is about 33814.2167290623. The cubic root of 1143401253 is about 1045.6818129375.

Adding to 1143401253 its reverse (3521043411), we get a palindrome (4664444664).

The spelling of 1143401253 in words is "one billion, one hundred forty-three million, four hundred one thousand, two hundred fifty-three".