320134040430 has 64 divisors (see below), whose sum is σ = 793588727808. Its totient is φ = 82564980480.

The previous prime is 320134040417. The next prime is 320134040449. The reversal of 320134040430 is 34040431023.

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 320134040430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1437139 + ... + 1644881.

It is an arithmetic number, because the mean of its divisors is an integer number (12399823872).

Almost surely, 2^320134040430 is an apocalyptic number.

320134040430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 320134040430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396794363904).

320134040430 is an abundant number, since it is smaller than the sum of its proper divisors (473454687378).

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

320134040430 is a wasteful number, since it uses less digits than its factorization.

320134040430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209441.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 320134040430 its reverse (34040431023), we get a palindrome (354174471453).

The spelling of 320134040430 in words is "three hundred twenty billion, one hundred thirty-four million, forty thousand, four hundred thirty".