20033303013 has 12 divisors (see below), whose sum is σ = 30639169548. Its totient is φ = 12569915520.

The previous prime is 20033302969. The next prime is 20033303023. The reversal of 20033303013 is 31030333002.

It can be written as a sum of positive squares in 2 ways, for example, as 15506973729 + 4526329284 = 124527^2 + 67278^2 .

It is not a de Polignac number, because 20033303013 - 2⁹ = 20033302501 is a prime.

It is a super-2 number, since 2×20033303013² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033303023) 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, 65468158 + ... + 65468463.

It is an arithmetic number, because the mean of its divisors is an integer number (2553264129).

Almost surely, 2^20033303013 is an apocalyptic number.

It is an amenable number.

20033303013 is a deficient number, since it is larger than the sum of its proper divisors (10605866535).

20033303013 is a wasteful number, since it uses less digits than its factorization.

20033303013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130936644 (or 130936641 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 18.

Adding to 20033303013 its reverse (31030333002), we get a palindrome (51063636015).

The spelling of 20033303013 in words is "twenty billion, thirty-three million, three hundred three thousand, thirteen".