203123202330 has 32 divisors (see below), whose sum is σ = 487509654528. Its totient is φ = 54164635200.

The previous prime is 203123202313. The next prime is 203123202341. The reversal of 203123202330 is 33202321302.

It is a junction number, because it is equal to n+sod(n) for n = 203123202297 and 203123202306.

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, 1294740 + ... + 1443120.

It is an arithmetic number, because the mean of its divisors is an integer number (15234676704).

Almost surely, 2^203123202330 is an apocalyptic number.

203123202330 is an abundant number, since it is smaller than the sum of its proper divisors (284386452198).

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

203123202330 is a wasteful number, since it uses less digits than its factorization.

203123202330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194022.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 203123202330 its reverse (33202321302), we get a palindrome (236325523632).

The spelling of 203123202330 in words is "two hundred three billion, one hundred twenty-three million, two hundred two thousand, three hundred thirty".