20311324503430 has 8 divisors (see below), whose sum is σ = 36560384106192. Its totient is φ = 8124529801368.

The previous prime is 20311324503397. The next prime is 20311324503523. The reversal of 20311324503430 is 3430542311302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20311324503392 and 20311324503401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015566225162 + ... + 1015566225181.

It is an arithmetic number, because the mean of its divisors is an integer number (4570048013274).

Almost surely, 2^{20311324503430} is an apocalyptic number.

20311324503430 is a deficient number, since it is larger than the sum of its proper divisors (16249059602762).

20311324503430 is a wasteful number, since it uses less digits than its factorization.

20311324503430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031132450350.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 20311324503430 its reverse (3430542311302), we get a palindrome (23741866814732).

The spelling of 20311324503430 in words is "twenty trillion, three hundred eleven billion, three hundred twenty-four million, five hundred three thousand, four hundred thirty".