20320310140 has 48 divisors (see below), whose sum is σ = 45979026912. Its totient is φ = 7498987776.

The previous prime is 20320310123. The next prime is 20320310159. The reversal of 20320310140 is 4101302302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507742 + ... + 546298.

It is an arithmetic number, because the mean of its divisors is an integer number (957896394).

Almost surely, 2^20320310140 is an apocalyptic number.

20320310140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20320310140 is an abundant number, since it is smaller than the sum of its proper divisors (25658716772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20320310140 is a wasteful number, since it uses less digits than its factorization.

20320310140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40606 (or 40604 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20320310140 its reverse (4101302302), we get a palindrome (24421612442).

The spelling of 20320310140 in words is "twenty billion, three hundred twenty million, three hundred ten thousand, one hundred forty".