20123203130 has 8 divisors (see below), whose sum is σ = 36221765652. Its totient is φ = 8049281248.

The previous prime is 20123203123. The next prime is 20123203157. The reversal of 20123203130 is 3130232102.

It can be written as a sum of positive squares in 2 ways, for example, as 18462559129 + 1660644001 = 135877^2 + 40751^2 .

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

It is a super-2 number, since 2×20123203130² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20123203099 and 20123203108.

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, 1006160147 + ... + 1006160166.

Almost surely, 2^20123203130 is an apocalyptic number.

20123203130 is a deficient number, since it is larger than the sum of its proper divisors (16098562522).

20123203130 is a wasteful number, since it uses less digits than its factorization.

20123203130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012320320.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20123203130 its reverse (3130232102), we get a palindrome (23253435232).

The spelling of 20123203130 in words is "twenty billion, one hundred twenty-three million, two hundred three thousand, one hundred thirty".