320145100 has 36 divisors (see below), whose sum is σ = 757873368. Its totient is φ = 116416000.

The previous prime is 320145047. The next prime is 320145109. The reversal of 320145100 is 1541023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320145109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144421 + ... + 146620.

It is an arithmetic number, because the mean of its divisors is an integer number (21052038).

Almost surely, 2^320145100 is an apocalyptic number.

It is an amenable number.

320145100 is an abundant number, since it is smaller than the sum of its proper divisors (437728268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320145100 is a wasteful number, since it uses less digits than its factorization.

320145100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291066 (or 291059 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 320145100 is about 17892.5990286487. The cubic root of 320145100 is about 684.0937453446.

Adding to 320145100 its reverse (1541023), we get a palindrome (321686123).

The spelling of 320145100 in words is "three hundred twenty million, one hundred forty-five thousand, one hundred".