20311331434302 has 32 divisors (see below), whose sum is σ = 40849707749760. Its totient is φ = 6732607779360.

The previous prime is 20311331434283. The next prime is 20311331434333. The reversal of 20311331434302 is 20343413311302.

It is a self number, because there is not a number n which added to its sum of digits gives 20311331434302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16633213 + ... + 17812535.

It is an arithmetic number, because the mean of its divisors is an integer number (1276553367180).

Almost surely, 2^{20311331434302} is an apocalyptic number.

20311331434302 is an abundant number, since it is smaller than the sum of its proper divisors (20538376315458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311331434302 is a wasteful number, since it uses less digits than its factorization.

20311331434302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195368.

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 20311331434302 its reverse (20343413311302), we get a palindrome (40654744745604).

The spelling of 20311331434302 in words is "twenty trillion, three hundred eleven billion, three hundred thirty-one million, four hundred thirty-four thousand, three hundred two".