320240542351 has 4 divisors (see below), whose sum is σ = 320410975600. Its totient is φ = 320070109104.

The previous prime is 320240542333. The next prime is 320240542361. The reversal of 320240542351 is 153245042023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320240542351 - 2⁹ = 320240541839 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 (320240542331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85213806 + ... + 85217563.

It is an arithmetic number, because the mean of its divisors is an integer number (80102743900).

Almost surely, 2^320240542351 is an apocalyptic number.

320240542351 is a deficient number, since it is larger than the sum of its proper divisors (170433249).

320240542351 is a wasteful number, since it uses less digits than its factorization.

320240542351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170433248.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 320240542351 its reverse (153245042023), we get a palindrome (473485584374).

The spelling of 320240542351 in words is "three hundred twenty billion, two hundred forty million, five hundred forty-two thousand, three hundred fifty-one".