203123320422 has 32 divisors (see below), whose sum is σ = 462446772480. Its totient is φ = 58876324320.

The previous prime is 203123320391. The next prime is 203123320453. The reversal of 203123320422 is 224023321302.

It is an interprime number because it is at equal distance from previous prime (203123320391) and next prime (203123320453).

It is a junction number, because it is equal to n+sod(n) for n = 203123320392 and 203123320401.

It is a congruent number.

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, 66903397 + ... + 66906432.

It is an arithmetic number, because the mean of its divisors is an integer number (14451461640).

Almost surely, 2^203123320422 is an apocalyptic number.

203123320422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

203123320422 is an abundant number, since it is smaller than the sum of its proper divisors (259323452058).

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

203123320422 is a wasteful number, since it uses less digits than its factorization.

203123320422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133809868.

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

Adding to 203123320422 its reverse (224023321302), we get a palindrome (427146641724).

The spelling of 203123320422 in words is "two hundred three billion, one hundred twenty-three million, three hundred twenty thousand, four hundred twenty-two".