20423131130 has 8 divisors (see below), whose sum is σ = 36761636052. Its totient is φ = 8169252448.

The previous prime is 20423131123. The next prime is 20423131147. The reversal of 20423131130 is 3113132402.

It can be written as a sum of positive squares in 2 ways, for example, as 18807653881 + 1615477249 = 137141^2 + 40193^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021156547 + ... + 1021156566.

Almost surely, 2^20423131130 is an apocalyptic number.

20423131130 is a deficient number, since it is larger than the sum of its proper divisors (16338504922).

20423131130 is a wasteful number, since it uses less digits than its factorization.

20423131130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042313120.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20423131130 its reverse (3113132402), we get a palindrome (23536263532).

The spelling of 20423131130 in words is "twenty billion, four hundred twenty-three million, one hundred thirty-one thousand, one hundred thirty".