1000313003 has 4 divisors (see below), whose sum is σ = 1000476480. Its totient is φ = 1000149528.

The previous prime is 1000312967. The next prime is 1000313009. The reversal of 1000313003 is 3003130001.

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 1000313003 - 2²⁸ = 731877547 is a prime.

It is a super-2 number, since 2×1000313003² = 2001252207941756018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000313009) 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, 72188 + ... + 84921.

It is an arithmetic number, because the mean of its divisors is an integer number (250119120).

Almost surely, 2^1000313003 is an apocalyptic number.

1000313003 is a deficient number, since it is larger than the sum of its proper divisors (163477).

1000313003 is an equidigital number, since it uses as much as digits as its factorization.

1000313003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163476.

The product of its (nonzero) digits is 27, while the sum is 11.

The square root of 1000313003 is about 31627.7252264528. The cubic root of 1000313003 is about 1000.1043234496.

Adding to 1000313003 its reverse (3003130001), we get a palindrome (4003443004).

The spelling of 1000313003 in words is "one billion, three hundred thirteen thousand, three".