1143312101 has 8 divisors (see below), whose sum is σ = 1240092504. Its totient is φ = 1049812480.

The previous prime is 1143312091. The next prime is 1143312109. The reversal of 1143312101 is 1012133411.

It can be written as a sum of positive squares in 4 ways, for example, as 337603876 + 805708225 = 18374^2 + 28385^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1143312101 - 2²² = 1139117797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 1143312101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143312109) 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, 819470 + ... + 820863.

It is an arithmetic number, because the mean of its divisors is an integer number (155011563).

Almost surely, 2^1143312101 is an apocalyptic number.

It is an amenable number.

1143312101 is a deficient number, since it is larger than the sum of its proper divisors (96780403).

1143312101 is a wasteful number, since it uses less digits than its factorization.

1143312101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640391.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1143312101 is about 33812.8984412753. The cubic root of 1143312101 is about 1045.6546346546.

Adding to 1143312101 its reverse (1012133411), we get a palindrome (2155445512).

The spelling of 1143312101 in words is "one billion, one hundred forty-three million, three hundred twelve thousand, one hundred one".