1020003001 has 4 divisors (see below), whose sum is σ = 1021185792. Its totient is φ = 1018820212.

The previous prime is 1020002999. The next prime is 1020003029. The reversal of 1020003001 is 1003000201.

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.

It is a cyclic number.

It is not a de Polignac number, because 1020003001 - 2¹ = 1020002999 is a prime.

It is a super-2 number, since 2×1020003001² = 2080812244098012002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020003091) 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, 590101 + ... + 591826.

It is an arithmetic number, because the mean of its divisors is an integer number (255296448).

Almost surely, 2^1020003001 is an apocalyptic number.

It is an amenable number.

1020003001 is a deficient number, since it is larger than the sum of its proper divisors (1182791).

1020003001 is an equidigital number, since it uses as much as digits as its factorization.

1020003001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182790.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 1020003001 is about 31937.4858277855. The cubic root of 1020003001 is about 1006.6236967731.

Adding to 1020003001 its reverse (1003000201), we get a palindrome (2023003202).

The spelling of 1020003001 in words is "one billion, twenty million, three thousand, one".