20311203240430 has 32 divisors (see below), whose sum is σ = 37775096402688. Its totient is φ = 7854990758400.

The previous prime is 20311203240413. The next prime is 20311203240443. The reversal of 20311203240430 is 3404230211302.

It is a junction number, because it is equal to n+sod(n) for n = 20311203240395 and 20311203240404.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 30547627 + ... + 31205446.

It is an arithmetic number, because the mean of its divisors is an integer number (1180471762584).

Almost surely, 2^{20311203240430} is an apocalyptic number.

20311203240430 is a deficient number, since it is larger than the sum of its proper divisors (17463893162258).

20311203240430 is a wasteful number, since it uses less digits than its factorization.

20311203240430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61754172.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20311203240430 its reverse (3404230211302), we get a palindrome (23715433451732).

The spelling of 20311203240430 in words is "twenty trillion, three hundred eleven billion, two hundred three million, two hundred forty thousand, four hundred thirty".