203107212 has 108 divisors (see below), whose sum is σ = 645041488. Its totient is φ = 52747200.

The previous prime is 203107147. The next prime is 203107241. The reversal of 203107212 is 212701302.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27162 + ... + 33822.

Almost surely, 2^203107212 is an apocalyptic number.

203107212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203107212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322520744).

203107212 is an abundant number, since it is smaller than the sum of its proper divisors (441934276).

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

203107212 is a wasteful number, since it uses less digits than its factorization.

203107212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700 (or 6684 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 203107212 is about 14251.5687557546. The cubic root of 203107212 is about 587.8165122328.

Adding to 203107212 its reverse (212701302), we get a palindrome (415808514).

The spelling of 203107212 in words is "two hundred three million, one hundred seven thousand, two hundred twelve".