1002320143 has 8 divisors (see below), whose sum is σ = 1111973760. Its totient is φ = 895755480.

The previous prime is 1002320141. The next prime is 1002320147. The reversal of 1002320143 is 3410232001.

It is a happy number.

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 1002320143 - 2¹ = 1002320141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002320141) 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, 771555 + ... + 772852.

It is an arithmetic number, because the mean of its divisors is an integer number (138996720).

Almost surely, 2^1002320143 is an apocalyptic number.

1002320143 is a deficient number, since it is larger than the sum of its proper divisors (109653617).

1002320143 is a wasteful number, since it uses less digits than its factorization.

1002320143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544477.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1002320143 is about 31659.4400297921. The cubic root of 1002320143 is about 1000.7727836516.

Adding to 1002320143 its reverse (3410232001), we get a palindrome (4412552144).

The spelling of 1002320143 in words is "one billion, two million, three hundred twenty thousand, one hundred forty-three".