320231541650257 has 4 divisors (see below), whose sum is σ = 337085833316080. Its totient is φ = 303377249984436.

The previous prime is 320231541650201. The next prime is 320231541650269. The reversal of 320231541650257 is 752056145132023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320231541650257 - 2¹⁵ = 320231541617489 is a prime.

It is a super-3 number, since 3×320231541650257³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320231541650557) 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, 8427145832883 + ... + 8427145832920.

It is an arithmetic number, because the mean of its divisors is an integer number (84271458329020).

Almost surely, 2^{320231541650257} is an apocalyptic number.

It is an amenable number.

320231541650257 is a deficient number, since it is larger than the sum of its proper divisors (16854291665823).

320231541650257 is a wasteful number, since it uses less digits than its factorization.

320231541650257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16854291665822.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 320231541650257 in words is "three hundred twenty trillion, two hundred thirty-one billion, five hundred forty-one million, six hundred fifty thousand, two hundred fifty-seven".