1000313143 has 4 divisors (see below), whose sum is σ = 1003571800. Its totient is φ = 997054488.

The previous prime is 1000313137. The next prime is 1000313189. The reversal of 1000313143 is 3413130001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1000313143 - 2²¹ = 998215991 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 (1000313123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1628868 + ... + 1629481.

It is an arithmetic number, because the mean of its divisors is an integer number (250892950).

Almost surely, 2^1000313143 is an apocalyptic number.

1000313143 is a deficient number, since it is larger than the sum of its proper divisors (3258657).

1000313143 is an equidigital number, since it uses as much as digits as its factorization.

1000313143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258656.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1000313143 is about 31627.7274397008. The cubic root of 1000313143 is about 1000.1043701065.

Adding to 1000313143 its reverse (3413130001), we get a palindrome (4413443144).

The spelling of 1000313143 in words is "one billion, three hundred thirteen thousand, one hundred forty-three".