20321023130 has 16 divisors (see below), whose sum is σ = 36590468040. Its totient is φ = 8125603392.

The previous prime is 20321023109. The next prime is 20321023133. The reversal of 20321023130 is 3132012302.

It can be written as a sum of positive squares in 4 ways, for example, as 19652955721 + 668067409 = 140189^2 + 25847^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20321023099 and 20321023108.

It is not an unprimeable number, because it can be changed into a prime (20321023133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320189 + ... + 378368.

Almost surely, 2^20321023130 is an apocalyptic number.

20321023130 is a deficient number, since it is larger than the sum of its proper divisors (16269444910).

20321023130 is a wasteful number, since it uses less digits than its factorization.

20321023130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701473.

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

Adding to 20321023130 its reverse (3132012302), we get a palindrome (23453035432).

The spelling of 20321023130 in words is "twenty billion, three hundred twenty-one million, twenty-three thousand, one hundred thirty".