203030300040 has 32 divisors (see below), whose sum is σ = 609090900480. Its totient is φ = 54141413312.

The previous prime is 203030300021. The next prime is 203030300063. The reversal of 203030300040 is 40003030302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 203030299992 and 203030300019.

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, 845959464 + ... + 845959703.

It is an arithmetic number, because the mean of its divisors is an integer number (19034090640).

Almost surely, 2^203030300040 is an apocalyptic number.

203030300040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203030300040 is an abundant number, since it is smaller than the sum of its proper divisors (406060600440).

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

203030300040 is a wasteful number, since it uses less digits than its factorization.

203030300040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691919181 (or 1691919177 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 15.

Adding to 203030300040 its reverse (40003030302), we get a palindrome (243033330342).

The spelling of 203030300040 in words is "two hundred three billion, thirty million, three hundred thousand, forty".