20203023140 has 24 divisors (see below), whose sum is σ = 42903052920. Its totient is φ = 7990408448.

The previous prime is 20203023103. The next prime is 20203023259. The reversal of 20203023140 is 4132030202.

It can be written as a sum of positive squares in 4 ways, for example, as 108826624 + 20094196516 = 10432^2 + 141754^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5673227 + ... + 5676786.

It is an arithmetic number, because the mean of its divisors is an integer number (1787627205).

Almost surely, 2^20203023140 is an apocalyptic number.

20203023140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20203023140 is an abundant number, since it is smaller than the sum of its proper divisors (22700029780).

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

20203023140 is a wasteful number, since it uses less digits than its factorization.

20203023140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11350111 (or 11350109 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20203023140 its reverse (4132030202), we get a palindrome (24335053342).

The spelling of 20203023140 in words is "twenty billion, two hundred three million, twenty-three thousand, one hundred forty".