1020013003 has 16 divisors (see below), whose sum is σ = 1068328960. Its totient is φ = 972972000.

The previous prime is 1020012991. The next prime is 1020013031. The reversal of 1020013003 is 3003100201.

It is a cyclic number.

It is not a de Polignac number, because 1020013003 - 2⁹ = 1020012491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020013303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440218 + ... + 442528.

It is an arithmetic number, because the mean of its divisors is an integer number (66770560).

Almost surely, 2^1020013003 is an apocalyptic number.

1020013003 is a deficient number, since it is larger than the sum of its proper divisors (48315957).

1020013003 is a wasteful number, since it uses less digits than its factorization.

1020013003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1020013003 is about 31937.6424145553. The cubic root of 1020013003 is about 1006.6269870305.

Adding to 1020013003 its reverse (3003100201), we get a palindrome (4023113204).

The spelling of 1020013003 in words is "one billion, twenty million, thirteen thousand, three".