203012440140 has 96 divisors (see below), whose sum is σ = 589194353664. Its totient is φ = 52193940480.

The previous prime is 203012440123. The next prime is 203012440157. The reversal of 203012440140 is 41044210302.

It is an interprime number because it is at equal distance from previous prime (203012440123) and next prime (203012440157).

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, 348301 + ... + 726180.

It is an arithmetic number, because the mean of its divisors is an integer number (6137441184).

Almost surely, 2^203012440140 is an apocalyptic number.

203012440140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203012440140 is an abundant number, since it is smaller than the sum of its proper divisors (386181913524).

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

203012440140 is a wasteful number, since it uses less digits than its factorization.

203012440140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074607 (or 1074605 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 203012440140 its reverse (41044210302), we get a palindrome (244056650442).

The spelling of 203012440140 in words is "two hundred three billion, twelve million, four hundred forty thousand, one hundred forty".