320140430 has 32 divisors (see below), whose sum is σ = 612489600. Its totient is φ = 120061440.

The previous prime is 320140417. The next prime is 320140451. The reversal of 320140430 is 34041023.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 320140399 and 320140408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42596 + ... + 49544.

It is an arithmetic number, because the mean of its divisors is an integer number (19140300).

Almost surely, 2^320140430 is an apocalyptic number.

320140430 is a deficient number, since it is larger than the sum of its proper divisors (292349170).

320140430 is a wasteful number, since it uses less digits than its factorization.

320140430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7244.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 320140430 is about 17892.4685272882. The cubic root of 320140430 is about 684.0904190057.

Adding to 320140430 its reverse (34041023), we get a palindrome (354181453).

The spelling of 320140430 in words is "three hundred twenty million, one hundred forty thousand, four hundred thirty".