320091357 has 8 divisors (see below), whose sum is σ = 441505440. Its totient is φ = 206035760.

The previous prime is 320091323. The next prime is 320091383. The reversal of 320091357 is 753190023.

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 320091357 - 2⁶ = 320091293 is a prime.

It is a super-2 number, since 2×320091357² = 204916953652202898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320091307) 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, 1839519 + ... + 1839692.

It is an arithmetic number, because the mean of its divisors is an integer number (55188180).

Almost surely, 2^320091357 is an apocalyptic number.

It is an amenable number.

320091357 is a deficient number, since it is larger than the sum of its proper divisors (121414083).

320091357 is a wasteful number, since it uses less digits than its factorization.

320091357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679243.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 320091357 is about 17891.0971435516. The cubic root of 320091357 is about 684.0554634243.

The spelling of 320091357 in words is "three hundred twenty million, ninety-one thousand, three hundred fifty-seven".