203123340312 has 32 divisors (see below), whose sum is σ = 508022127600. Its totient is φ = 67679276544.

The previous prime is 203123340269. The next prime is 203123340341. The reversal of 203123340312 is 213043321302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 1723237 + ... + 1837332.

Almost surely, 2^203123340312 is an apocalyptic number.

It is an amenable number.

203123340312 is an abundant number, since it is smaller than the sum of its proper divisors (304898787288).

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

203123340312 is a wasteful number, since it uses less digits than its factorization.

203123340312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562955 (or 3562951 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 203123340312 its reverse (213043321302), we get a palindrome (416166661614).

The spelling of 203123340312 in words is "two hundred three billion, one hundred twenty-three million, three hundred forty thousand, three hundred twelve".