320120634 has 16 divisors (see below), whose sum is σ = 640418688. Its totient is φ = 106677312.

The previous prime is 320120617. The next prime is 320120651. The reversal of 320120634 is 436021023.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (320120617) and next prime (320120651).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 320120634.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33279 + ... + 41805.

It is an arithmetic number, because the mean of its divisors is an integer number (40026168).

Almost surely, 2^320120634 is an apocalyptic number.

320120634 is an abundant number, since it is smaller than the sum of its proper divisors (320298054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320120634 is a wasteful number, since it uses less digits than its factorization.

320120634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14789.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 320120634 is about 17891.9153250847. The cubic root of 320120634 is about 684.0763183883.

Adding to 320120634 its reverse (436021023), we get a palindrome (756141657).

The spelling of 320120634 in words is "three hundred twenty million, one hundred twenty thousand, six hundred thirty-four".