20420431130 has 64 divisors (see below), whose sum is σ = 40684032000. Its totient is φ = 7317510720.

The previous prime is 20420431103. The next prime is 20420431133. The reversal of 20420431130 is 3113402402.

It is not an unprimeable number, because it can be changed into a prime (20420431133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5203349 + ... + 5207271.

It is an arithmetic number, because the mean of its divisors is an integer number (635688000).

Almost surely, 2^20420431130 is an apocalyptic number.

20420431130 is a deficient number, since it is larger than the sum of its proper divisors (20263600870).

20420431130 is a wasteful number, since it uses less digits than its factorization.

20420431130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4619.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20420431130 its reverse (3113402402), we get a palindrome (23533833532).

The spelling of 20420431130 in words is "twenty billion, four hundred twenty million, four hundred thirty-one thousand, one hundred thirty".