1143023201 has 4 divisors (see below), whose sum is σ = 1145751600. Its totient is φ = 1140294804.

The previous prime is 1143023183. The next prime is 1143023209. The reversal of 1143023201 is 1023203411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1023203411 = 347 ⋅2948713.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143023201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143023201.

It is not an unprimeable number, because it can be changed into a prime (1143023209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1363571 + ... + 1364408.

It is an arithmetic number, because the mean of its divisors is an integer number (286437900).

Almost surely, 2^1143023201 is an apocalyptic number.

It is an amenable number.

1143023201 is a deficient number, since it is larger than the sum of its proper divisors (2728399).

1143023201 is an equidigital number, since it uses as much as digits as its factorization.

1143023201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728398.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1143023201 is about 33808.6261329856. The cubic root of 1143023201 is about 1045.5665528229.

Adding to 1143023201 its reverse (1023203411), we get a palindrome (2166226612).

The spelling of 1143023201 in words is "one billion, one hundred forty-three million, twenty-three thousand, two hundred one".