20303131323333 has 64 divisors (see below), whose sum is σ = 30346980721920. Its totient is φ = 12017912758272.

The previous prime is 20303131323301. The next prime is 20303131323353. The reversal of 20303131323333 is 33332313130302.

It is a happy number.

It is not a de Polignac number, because 20303131323333 - 2⁵ = 20303131323301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20303131323333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303131323353) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6878241 + ... + 9376377.

It is an arithmetic number, because the mean of its divisors is an integer number (474171573780).

Almost surely, 2^{20303131323333} is an apocalyptic number.

It is an amenable number.

20303131323333 is a deficient number, since it is larger than the sum of its proper divisors (10043849398587).

20303131323333 is a wasteful number, since it uses less digits than its factorization.

20303131323333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498326.

The product of its (nonzero) digits is 26244, while the sum is 30.

Adding to 20303131323333 its reverse (33332313130302), we get a palindrome (53635444453635).

The spelling of 20303131323333 in words is "twenty trillion, three hundred three billion, one hundred thirty-one million, three hundred twenty-three thousand, three hundred thirty-three".