320740210531 has 8 divisors (see below), whose sum is σ = 347897518640. Its totient is φ = 293937900192.

The previous prime is 320740210529. The next prime is 320740210537. The reversal of 320740210531 is 135012047023.

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 320740210531 - 2¹ = 320740210529 is a prime.

It is a super-2 number, since 2×320740210531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320740210531.

It is not an unprimeable number, because it can be changed into a prime (320740210537) 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, 88747560 + ... + 88751173.

It is an arithmetic number, because the mean of its divisors is an integer number (43487189830).

Almost surely, 2^320740210531 is an apocalyptic number.

320740210531 is a deficient number, since it is larger than the sum of its proper divisors (27157308109).

320740210531 is a wasteful number, since it uses less digits than its factorization.

320740210531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177498885.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 320740210531 its reverse (135012047023), we get a palindrome (455752257554).

The spelling of 320740210531 in words is "three hundred twenty billion, seven hundred forty million, two hundred ten thousand, five hundred thirty-one".