203123232223220 has 12 divisors (see below), whose sum is σ = 426558787668804. Its totient is φ = 81249292889280.

The previous prime is 203123232223199. The next prime is 203123232223253. The reversal of 203123232223220 is 22322232321302.

It can be written as a sum of positive squares in 2 ways, for example, as 87883050163216 + 115240182060004 = 9374596^2 + 10734998^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5078080805561 + ... + 5078080805600.

It is an arithmetic number, because the mean of its divisors is an integer number (35546565639067).

Almost surely, 2^{203123232223220} is an apocalyptic number.

203123232223220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203123232223220 is an abundant number, since it is smaller than the sum of its proper divisors (223435555445584).

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

203123232223220 is a wasteful number, since it uses less digits than its factorization.

203123232223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10156161611170 (or 10156161611168 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 203123232223220 its reverse (22322232321302), we get a palindrome (225445464544522).

The spelling of 203123232223220 in words is "two hundred three trillion, one hundred twenty-three billion, two hundred thirty-two million, two hundred twenty-three thousand, two hundred twenty".