203112020420431 has 2 divisors, whose sum is σ = 203112020420432. Its totient is φ = 203112020420430.

The previous prime is 203112020420401. The next prime is 203112020420443. The reversal of 203112020420431 is 134024020211302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203112020420431 - 2¹⁵ = 203112020387663 is a prime.

It is a super-2 number, since 2×203112020420431² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203112020420396 and 203112020420405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203112020420401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101556010210215 + 101556010210216.

It is an arithmetic number, because the mean of its divisors is an integer number (101556010210216).

Almost surely, 2^{203112020420431} is an apocalyptic number.

203112020420431 is a deficient number, since it is larger than the sum of its proper divisors (1).

203112020420431 is an equidigital number, since it uses as much as digits as its factorization.

203112020420431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 203112020420431 its reverse (134024020211302), we get a palindrome (337136040631733).

The spelling of 203112020420431 in words is "two hundred three trillion, one hundred twelve billion, twenty million, four hundred twenty thousand, four hundred thirty-one".