212432403 has 4 divisors (see below), whose sum is σ = 283243208. Its totient is φ = 141621600.

The previous prime is 212432401. The next prime is 212432413. The reversal of 212432403 is 304234212.

212432403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 212432403 - 2¹ = 212432401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212432403.

It is not an unprimeable number, because it can be changed into a prime (212432401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35405398 + ... + 35405403.

It is an arithmetic number, because the mean of its divisors is an integer number (70810802).

Almost surely, 2^212432403 is an apocalyptic number.

212432403 is a deficient number, since it is larger than the sum of its proper divisors (70810805).

212432403 is an equidigital number, since it uses as much as digits as its factorization.

212432403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70810804.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 212432403 is about 14575.0609947266. The cubic root of 212432403 is about 596.6783140505.

Adding to 212432403 its reverse (304234212), we get a palindrome (516666615).

The spelling of 212432403 in words is "two hundred twelve million, four hundred thirty-two thousand, four hundred three".