320745416531 has 8 divisors (see below), whose sum is σ = 339671664720. Its totient is φ = 301825709568.

The previous prime is 320745416527. The next prime is 320745416543. The reversal of 320745416531 is 135614547023.

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

It is not a de Polignac number, because 320745416531 - 2² = 320745416527 is a prime.

It is a super-2 number, since 2×320745416531² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320745416561) 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, 1534166 + ... + 1730651.

It is an arithmetic number, because the mean of its divisors is an integer number (42458958090).

Almost surely, 2^320745416531 is an apocalyptic number.

320745416531 is a deficient number, since it is larger than the sum of its proper divisors (18926248189).

320745416531 is a wasteful number, since it uses less digits than its factorization.

320745416531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270613.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 320745416531 in words is "three hundred twenty billion, seven hundred forty-five million, four hundred sixteen thousand, five hundred thirty-one".