423444313 has 8 divisors (see below), whose sum is σ = 449222760. Its totient is φ = 397762560.

The previous prime is 423444299. The next prime is 423444319. The reversal of 423444313 is 313444324.

It can be written as a sum of positive squares in 4 ways, for example, as 10419984 + 413024329 = 3228^2 + 20323^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 423444313 - 2²¹ = 421347161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423444319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15048 + ... + 32761.

It is an arithmetic number, because the mean of its divisors is an integer number (56152845).

Almost surely, 2^423444313 is an apocalyptic number.

It is an amenable number.

423444313 is a deficient number, since it is larger than the sum of its proper divisors (25778447).

423444313 is a wasteful number, since it uses less digits than its factorization.

423444313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48347.

The product of its digits is 13824, while the sum is 28.

The square root of 423444313 is about 20577.7625848876. The cubic root of 423444313 is about 750.9288125275.

Adding to 423444313 its reverse (313444324), we get a palindrome (736888637).

The spelling of 423444313 in words is "four hundred twenty-three million, four hundred forty-four thousand, three hundred thirteen".