320951 has 4 divisors (see below), whose sum is σ = 323400. Its totient is φ = 318504.

The previous prime is 320941. The next prime is 320953. The reversal of 320951 is 159023.

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 320951 - 2¹⁰ = 319927 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320951.

It is not an unprimeable number, because it can be changed into a prime (320953) 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, 1016 + ... + 1293.

It is an arithmetic number, because the mean of its divisors is an integer number (80850).

2³²⁰⁹⁵¹ is an apocalyptic number.

320951 is a deficient number, since it is larger than the sum of its proper divisors (2449).

320951 is a wasteful number, since it uses less digits than its factorization.

320951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 320951 is about 566.5253745420. The cubic root of 320951 is about 68.4667286520.

Adding to 320951 its reverse (159023), we get a palindrome (479974).

The spelling of 320951 in words is "three hundred twenty thousand, nine hundred fifty-one".