20203204121431 has 2 divisors, whose sum is σ = 20203204121432. Its totient is φ = 20203204121430.

The previous prime is 20203204121389. The next prime is 20203204121437. The reversal of 20203204121431 is 13412140230202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20203204121431 is a prime.

It is a super-2 number, since 2×20203204121431² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20203204121396 and 20203204121405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20203204121437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101602060715 + 10101602060716.

It is an arithmetic number, because the mean of its divisors is an integer number (10101602060716).

Almost surely, 2^{20203204121431} is an apocalyptic number.

20203204121431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203204121431 is an equidigital number, since it uses as much as digits as its factorization.

20203204121431 is an evil number, because the sum of its binary digits is even.

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

Adding to 20203204121431 its reverse (13412140230202), we get a palindrome (33615344351633).

The spelling of 20203204121431 in words is "twenty trillion, two hundred three billion, two hundred four million, one hundred twenty-one thousand, four hundred thirty-one".