203131412 has 18 divisors (see below), whose sum is σ = 390735114. Its totient is φ = 92332240.

The previous prime is 203131393. The next prime is 203131417. The reversal of 203131412 is 214131302.

203131412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 196392196 + 6739216 = 14014^2 + 2596^2 .

It is a super-2 number, since 2×203131412² = 82524741082227488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203131417) 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 5 ways as a sum of consecutive naturals, for example, 209363 + ... + 210330.

Almost surely, 2^203131412 is an apocalyptic number.

203131412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

203131412 is a deficient number, since it is larger than the sum of its proper divisors (187603702).

203131412 is a wasteful number, since it uses less digits than its factorization.

203131412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419719 (or 419706 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 203131412 is about 14252.4177598048. The cubic root of 203131412 is about 587.8398572017.

Adding to 203131412 its reverse (214131302), we get a palindrome (417262714).

The spelling of 203131412 in words is "two hundred three million, one hundred thirty-one thousand, four hundred twelve".