203140020 has 96 divisors (see below), whose sum is σ = 607178880. Its totient is φ = 50595840.

The previous prime is 203139991. The next prime is 203140033. The reversal of 203140020 is 20041302.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 203139978 and 203140005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82000 + ... + 84440.

It is an arithmetic number, because the mean of its divisors is an integer number (6324780).

Almost surely, 2^203140020 is an apocalyptic number.

203140020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203140020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303589440).

203140020 is an abundant number, since it is smaller than the sum of its proper divisors (404038860).

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

203140020 is a wasteful number, since it uses less digits than its factorization.

203140020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545 (or 2543 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 203140020 is about 14252.7197404566. The cubic root of 203140020 is about 587.8481606180.

Adding to 203140020 its reverse (20041302), we get a palindrome (223181322).

The spelling of 203140020 in words is "two hundred three million, one hundred forty thousand, twenty".