423211903 has 4 divisors (see below), whose sum is σ = 423304648. Its totient is φ = 423119160.

The previous prime is 423211849. The next prime is 423211913. The reversal of 423211903 is 309112324.

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

It is a cyclic number.

It is not a de Polignac number, because 423211903 - 2⁹ = 423211391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423211913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39153 + ... + 48778.

It is an arithmetic number, because the mean of its divisors is an integer number (105826162).

Almost surely, 2^423211903 is an apocalyptic number.

423211903 is a deficient number, since it is larger than the sum of its proper divisors (92745).

423211903 is an equidigital number, since it uses as much as digits as its factorization.

423211903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92744.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 423211903 is about 20572.1146944110. The cubic root of 423211903 is about 750.7914034286.

The spelling of 423211903 in words is "four hundred twenty-three million, two hundred eleven thousand, nine hundred three".