2011020003 has 12 divisors (see below), whose sum is σ = 2998510528. Its totient is φ = 1297432080.

The previous prime is 2011019999. The next prime is 2011020007. The reversal of 2011020003 is 3000201102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2011019999) and next prime (2011020007).

It is not a de Polignac number, because 2011020003 - 2² = 2011019999 is a prime.

It is a super-2 number, since 2×2011020003² = 8088402904932240018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011020007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3603700 + ... + 3604257.

Almost surely, 2^2011020003 is an apocalyptic number.

2011020003 is a deficient number, since it is larger than the sum of its proper divisors (987490525).

2011020003 is a wasteful number, since it uses less digits than its factorization.

2011020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7207994 (or 7207991 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2011020003 is about 44844.3976768559. The cubic root of 2011020003 is about 1262.2308683324.

Adding to 2011020003 its reverse (3000201102), we get a palindrome (5011221105).

The spelling of 2011020003 in words is "two billion, eleven million, twenty thousand, three".