20100033403 has 4 divisors (see below), whose sum is σ = 20100354120. Its totient is φ = 20099712688.

The previous prime is 20100033377. The next prime is 20100033427. The reversal of 20100033403 is 30433000102.

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 20100033403 - 2²⁹ = 19563162491 is a prime.

It is a super-2 number, since 2×20100033403² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20100033463) 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, 32218 + ... + 203071.

It is an arithmetic number, because the mean of its divisors is an integer number (5025088530).

Almost surely, 2^20100033403 is an apocalyptic number.

20100033403 is a deficient number, since it is larger than the sum of its proper divisors (320717).

20100033403 is an equidigital number, since it uses as much as digits as its factorization.

20100033403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320716.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20100033403 its reverse (30433000102), we get a palindrome (50533033505).

The spelling of 20100033403 in words is "twenty billion, one hundred million, thirty-three thousand, four hundred three".