20303021231131 has 2 divisors, whose sum is σ = 20303021231132. Its totient is φ = 20303021231130.

The previous prime is 20303021231113. The next prime is 20303021231147. The reversal of 20303021231131 is 13113212030302.

Together with previous prime (20303021231113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20303021231131 - 2²⁷ = 20302887013403 is a prime.

It is a super-2 number, since 2×20303021231131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20303021231161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151510615565 + 10151510615566.

It is an arithmetic number, because the mean of its divisors is an integer number (10151510615566).

Almost surely, 2^{20303021231131} is an apocalyptic number.

20303021231131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303021231131 is an equidigital number, since it uses as much as digits as its factorization.

20303021231131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20303021231131 its reverse (13113212030302), we get a palindrome (33416233261433).

The spelling of 20303021231131 in words is "twenty trillion, three hundred three billion, twenty-one million, two hundred thirty-one thousand, one hundred thirty-one".