20303013131 has 2 divisors, whose sum is σ = 20303013132. Its totient is φ = 20303013130.

The previous prime is 20303013119. The next prime is 20303013139. The reversal of 20303013131 is 13131030302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20303013131 is a prime.

It is a super-2 number, since 2×20303013131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20303013139) 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 as a sum of consecutive naturals, namely, 10151506565 + 10151506566.

It is an arithmetic number, because the mean of its divisors is an integer number (10151506566).

Almost surely, 2^20303013131 is an apocalyptic number.

20303013131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303013131 is an equidigital number, since it uses as much as digits as its factorization.

20303013131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 20303013131 its reverse (13131030302), we get a palindrome (33434043433).

The spelling of 20303013131 in words is "twenty billion, three hundred three million, thirteen thousand, one hundred thirty-one".