212606403 has 32 divisors (see below), whose sum is σ = 310109184. Its totient is φ = 129019392.

The previous prime is 212606393. The next prime is 212606419. The reversal of 212606403 is 304606212.

212606403 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 212606403 - 2⁹ = 212605891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212606423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 579126 + ... + 579492.

It is an arithmetic number, because the mean of its divisors is an integer number (9690912).

Almost surely, 2^212606403 is an apocalyptic number.

212606403 is a deficient number, since it is larger than the sum of its proper divisors (97502781).

212606403 is a wasteful number, since it uses less digits than its factorization.

212606403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 212606403 is about 14581.0288731626. The cubic root of 212606403 is about 596.8411794950.

The spelling of 212606403 in words is "two hundred twelve million, six hundred six thousand, four hundred three".