20303101233 has 6 divisors (see below), whose sum is σ = 29326701794. Its totient is φ = 13535400816.

The previous prime is 20303101211. The next prime is 20303101249. The reversal of 20303101233 is 33210130302.

It can be written as a sum of positive squares in only one way, i.e., 11731489344 + 8571611889 = 108312^2 + 92583^2 .

It is not a de Polignac number, because 20303101233 - 2⁵ = 20303101201 is a prime.

It is a super-2 number, since 2×20303101233² (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 (20303101733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1127950060 + ... + 1127950077.

Almost surely, 2^20303101233 is an apocalyptic number.

It is an amenable number.

20303101233 is a deficient number, since it is larger than the sum of its proper divisors (9023600561).

20303101233 is a wasteful number, since it uses less digits than its factorization.

20303101233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255900143 (or 2255900140 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20303101233 its reverse (33210130302), we get a palindrome (53513231535).

The spelling of 20303101233 in words is "twenty billion, three hundred three million, one hundred one thousand, two hundred thirty-three".