320434623 has 12 divisors (see below), whose sum is σ = 479992968. Its totient is φ = 213622920.

The previous prime is 320434613. The next prime is 320434651. The reversal of 320434623 is 326434023.

It is a happy number.

320434623 is a `hidden beast` number, since 3 + 2 + 0 + 4 + 34 + 623 = 666.

It is not a de Polignac number, because 320434623 - 2⁴ = 320434607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320434613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 659088 + ... + 659573.

It is an arithmetic number, because the mean of its divisors is an integer number (39999414).

Almost surely, 2^320434623 is an apocalyptic number.

320434623 is a deficient number, since it is larger than the sum of its proper divisors (159558345).

320434623 is an equidigital number, since it uses as much as digits as its factorization.

320434623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318676 (or 1318664 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

The square root of 320434623 is about 17900.6877800826. The cubic root of 320434623 is about 684.2999031128.

Adding to 320434623 its reverse (326434023), we get a palindrome (646868646).

The spelling of 320434623 in words is "three hundred twenty million, four hundred thirty-four thousand, six hundred twenty-three".