212403103 has 24 divisors (see below), whose sum is σ = 243658368. Its totient is φ = 183582000.

The previous prime is 212403067. The next prime is 212403119. The reversal of 212403103 is 301304212.

It is a happy number.

212403103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212403103 - 2²⁵ = 178848671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212403173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 750400 + ... + 750682.

It is an arithmetic number, because the mean of its divisors is an integer number (10152432).

Almost surely, 2^212403103 is an apocalyptic number.

212403103 is a deficient number, since it is larger than the sum of its proper divisors (31255265).

212403103 is a wasteful number, since it uses less digits than its factorization.

212403103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 212403103 is about 14574.0558184741. The cubic root of 212403103 is about 596.6508802595.

Adding to 212403103 its reverse (301304212), we get a palindrome (513707315).

The spelling of 212403103 in words is "two hundred twelve million, four hundred three thousand, one hundred three".