203422531240 has 64 divisors (see below), whose sum is σ = 477801970560. Its totient is φ = 77798434560.

The previous prime is 203422531237. The next prime is 203422531253. The reversal of 203422531240 is 42135224302.

It is a junction number, because it is equal to n+sod(n) for n = 203422531199 and 203422531208.

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, 2196675 + ... + 2287405.

It is an arithmetic number, because the mean of its divisors is an integer number (7465655790).

Almost surely, 2^203422531240 is an apocalyptic number.

203422531240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203422531240 is an abundant number, since it is smaller than the sum of its proper divisors (274379439320).

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

203422531240 is a wasteful number, since it uses less digits than its factorization.

203422531240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93202 (or 93198 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 203422531240 its reverse (42135224302), we get a palindrome (245557755542).

The spelling of 203422531240 in words is "two hundred three billion, four hundred twenty-two million, five hundred thirty-one thousand, two hundred forty".