320797151 has 4 divisors (see below), whose sum is σ = 321016704. Its totient is φ = 320577600.

The previous prime is 320797133. The next prime is 320797153. The reversal of 320797151 is 151797023.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320797151 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 (320797153) 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, 107570 + ... + 110511.

It is an arithmetic number, because the mean of its divisors is an integer number (80254176).

Almost surely, 2^320797151 is an apocalyptic number.

320797151 is a deficient number, since it is larger than the sum of its proper divisors (219553).

320797151 is a wasteful number, since it uses less digits than its factorization.

320797151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219552.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 320797151 is about 17910.8110089968. The cubic root of 320797151 is about 684.5578698044.

The spelling of 320797151 in words is "three hundred twenty million, seven hundred ninety-seven thousand, one hundred fifty-one".