203123312010 has 160 divisors (see below), whose sum is σ = 549663916032. Its totient is φ = 53821324800.

The previous prime is 203123312009. The next prime is 203123312033. The reversal of 203123312010 is 10213321302.

203123312010 is a `hidden beast` number, since 2 + 0 + 312 + 331 + 20 + 1 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 176474935 + ... + 176476085.

Almost surely, 2^203123312010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203123312010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274831958016).

203123312010 is an abundant number, since it is smaller than the sum of its proper divisors (346540604022).

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

203123312010 is a wasteful number, since it uses less digits than its factorization.

203123312010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370 (or 2361 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 203123312010 its reverse (10213321302), we get a palindrome (213336633312).

The spelling of 203123312010 in words is "two hundred three billion, one hundred twenty-three million, three hundred twelve thousand, ten".