20303012311031 has 32 divisors (see below), whose sum is σ = 22462989631488. Its totient is φ = 18290252106720.

The previous prime is 20303012311003. The next prime is 20303012311039. The reversal of 20303012311031 is 13011321030302.

It is a cyclic number.

It is not a de Polignac number, because 20303012311031 - 2⁶ = 20303012310967 is a prime.

It is a super-2 number, since 2×20303012311031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20303012310994 and 20303012311012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303012311039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1404710 + ... + 6525276.

It is an arithmetic number, because the mean of its divisors is an integer number (701968425984).

Almost surely, 2^{20303012311031} is an apocalyptic number.

20303012311031 is a deficient number, since it is larger than the sum of its proper divisors (2159977320457).

20303012311031 is a wasteful number, since it uses less digits than its factorization.

20303012311031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120771.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 20303012311031 its reverse (13011321030302), we get a palindrome (33314333341333).

The spelling of 20303012311031 in words is "twenty trillion, three hundred three billion, twelve million, three hundred eleven thousand, thirty-one".