320145349 has 8 divisors (see below), whose sum is σ = 343094400. Its totient is φ = 297948816.

The previous prime is 320145337. The next prime is 320145361. The reversal of 320145349 is 943541023.

It is an interprime number because it is at equal distance from previous prime (320145337) and next prime (320145361).

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 320145349 - 2¹³ = 320137157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320145349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320145389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187249 + ... + 188950.

It is an arithmetic number, because the mean of its divisors is an integer number (42886800).

Almost surely, 2^320145349 is an apocalyptic number.

It is an amenable number.

320145349 is a deficient number, since it is larger than the sum of its proper divisors (22949051).

320145349 is a wasteful number, since it uses less digits than its factorization.

320145349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376259.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 320145349 is about 17892.6059868315. The cubic root of 320145349 is about 684.0939227009.

The spelling of 320145349 in words is "three hundred twenty million, one hundred forty-five thousand, three hundred forty-nine".