20000431134330 has 64 divisors (see below), whose sum is σ = 48116752610688. Its totient is φ = 5320598877440.

The previous prime is 20000431134329. The next prime is 20000431134347. The reversal of 20000431134330 is 3343113400002.

It is a self number, because there is not a number n which added to its sum of digits gives 20000431134330.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39415792 + ... + 39919988.

It is an arithmetic number, because the mean of its divisors is an integer number (751824259542).

Almost surely, 2^{20000431134330} is an apocalyptic number.

20000431134330 is an abundant number, since it is smaller than the sum of its proper divisors (28116321476358).

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

20000431134330 is a wasteful number, since it uses less digits than its factorization.

20000431134330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507391.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 20000431134330 its reverse (3343113400002), we get a palindrome (23343544534332).

The spelling of 20000431134330 in words is "twenty trillion, four hundred thirty-one million, one hundred thirty-four thousand, three hundred thirty".