20031130204430 has 8 divisors (see below), whose sum is σ = 36056034367992. Its totient is φ = 8012452081768.

The previous prime is 20031130204387. The next prime is 20031130204433. The reversal of 20031130204430 is 3440203113002.

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 = 20031130204396 and 20031130204405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031130204433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001556510212 + ... + 1001556510231.

It is an arithmetic number, because the mean of its divisors is an integer number (4507004295999).

Almost surely, 2^{20031130204430} is an apocalyptic number.

20031130204430 is a deficient number, since it is larger than the sum of its proper divisors (16024904163562).

20031130204430 is a wasteful number, since it uses less digits than its factorization.

20031130204430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003113020450.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20031130204430 its reverse (3440203113002), we get a palindrome (23471333317432).

The spelling of 20031130204430 in words is "twenty trillion, thirty-one billion, one hundred thirty million, two hundred four thousand, four hundred thirty".