203020312 has 32 divisors (see below), whose sum is σ = 416022480. Its totient is φ = 92114560.

The previous prime is 203020309. The next prime is 203020319. The reversal of 203020312 is 213020302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 203020292 and 203020301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203020319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55698 + ... + 59230.

Almost surely, 2^203020312 is an apocalyptic number.

203020312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

203020312 is an abundant number, since it is smaller than the sum of its proper divisors (213002168).

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

203020312 is a wasteful number, since it uses less digits than its factorization.

203020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4203 (or 4199 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 203020312 is about 14248.5196424050. The cubic root of 203020312 is about 587.7326672834.

Adding to 203020312 its reverse (213020302), we get a palindrome (416040614).

The spelling of 203020312 in words is "two hundred three million, twenty thousand, three hundred twelve".