303213423 has 4 divisors (see below), whose sum is σ = 404284568. Its totient is φ = 202142280.

The previous prime is 303213397. The next prime is 303213433. The reversal of 303213423 is 324312303.

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

It is not a de Polignac number, because 303213423 - 2¹⁸ = 302951279 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 303213423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303213433) 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, 50535568 + ... + 50535573.

It is an arithmetic number, because the mean of its divisors is an integer number (101071142).

Almost surely, 2^303213423 is an apocalyptic number.

303213423 is a deficient number, since it is larger than the sum of its proper divisors (101071145).

303213423 is a wasteful number, since it uses less digits than its factorization.

303213423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101071144.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 303213423 is about 17413.0245218917. The cubic root of 303213423 is about 671.8146566696.

Adding to 303213423 its reverse (324312303), we get a palindrome (627525726).

The spelling of 303213423 in words is "three hundred three million, two hundred thirteen thousand, four hundred twenty-three".