423315145 has 16 divisors (see below), whose sum is σ = 555582528. Its totient is φ = 307074240.

The previous prime is 423315133. The next prime is 423315149. The reversal of 423315145 is 541513324.

It is not a de Polignac number, because 423315145 - 2¹¹ = 423313097 is a prime.

It is a super-4 number, since 4×423315145⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423315149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12142 + ... + 31528.

It is an arithmetic number, because the mean of its divisors is an integer number (34723908).

Almost surely, 2^423315145 is an apocalyptic number.

It is an amenable number.

423315145 is a deficient number, since it is larger than the sum of its proper divisors (132267383).

423315145 is a wasteful number, since it uses less digits than its factorization.

423315145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19800.

The product of its digits is 7200, while the sum is 28.

The square root of 423315145 is about 20574.6238118708. The cubic root of 423315145 is about 750.8524499975.

Adding to 423315145 its reverse (541513324), we get a palindrome (964828469).

The spelling of 423315145 in words is "four hundred twenty-three million, three hundred fifteen thousand, one hundred forty-five".