320040434311 has 8 divisors (see below), whose sum is σ = 346651179840. Its totient is φ = 293714296032.

The previous prime is 320040434309. The next prime is 320040434323. The reversal of 320040434311 is 113434040023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320040434311 - 2¹ = 320040434309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320040435311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71149471 + ... + 71153968.

It is an arithmetic number, because the mean of its divisors is an integer number (43331397480).

Almost surely, 2^320040434311 is an apocalyptic number.

320040434311 is a deficient number, since it is larger than the sum of its proper divisors (26610745529).

320040434311 is a wasteful number, since it uses less digits than its factorization.

320040434311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142303625.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 320040434311 its reverse (113434040023), we get a palindrome (433474474334).

The spelling of 320040434311 in words is "three hundred twenty billion, forty million, four hundred thirty-four thousand, three hundred eleven".