203243123220 has 96 divisors (see below), whose sum is σ = 571947844608. Its totient is φ = 53925384192.

The previous prime is 203243123207. The next prime is 203243123233. The reversal of 203243123220 is 22321342302.

It is an interprime number because it is at equal distance from previous prime (203243123207) and next prime (203243123233).

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, 35547802 + ... + 35553518.

It is an arithmetic number, because the mean of its divisors is an integer number (5957790048).

Almost surely, 2^203243123220 is an apocalyptic number.

203243123220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203243123220 is an abundant number, since it is smaller than the sum of its proper divisors (368704721388).

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

203243123220 is a wasteful number, since it uses less digits than its factorization.

203243123220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8609 (or 8607 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 203243123220 its reverse (22321342302), we get a palindrome (225564465522).

The spelling of 203243123220 in words is "two hundred three billion, two hundred forty-three million, one hundred twenty-three thousand, two hundred twenty".