20203334400431 has 48 divisors (see below), whose sum is σ = 26093367558144. Its totient is φ = 15287682339072.

The previous prime is 20203334400407. The next prime is 20203334400437. The reversal of 20203334400431 is 13400443330202.

It is a de Polignac number, because none of the positive numbers 2^k-20203334400431 is a prime.

It is a super-2 number, since 2×20203334400431² (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 = 20203334400394 and 20203334400403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203334400437) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 186517970 + ... + 186626256.

It is an arithmetic number, because the mean of its divisors is an integer number (543611824128).

Almost surely, 2^{20203334400431} is an apocalyptic number.

20203334400431 is a deficient number, since it is larger than the sum of its proper divisors (5890033157713).

20203334400431 is a wasteful number, since it uses less digits than its factorization.

20203334400431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115200 (or 115187 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 20203334400431 its reverse (13400443330202), we get a palindrome (33603777730633).

The spelling of 20203334400431 in words is "twenty trillion, two hundred three billion, three hundred thirty-four million, four hundred thousand, four hundred thirty-one".