323139505 has 16 divisors (see below), whose sum is σ = 431069184. Its totient is φ = 230927040.

The previous prime is 323139503. The next prime is 323139533. The reversal of 323139505 is 505931323.

It is not a de Polignac number, because 323139505 - 2¹ = 323139503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (323139503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78169 + ... + 82198.

It is an arithmetic number, because the mean of its divisors is an integer number (26941824).

Almost surely, 2^323139505 is an apocalyptic number.

It is an amenable number.

323139505 is a deficient number, since it is larger than the sum of its proper divisors (107929679).

323139505 is a wasteful number, since it uses less digits than its factorization.

323139505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160416.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 323139505 is about 17976.0814695528. The cubic root of 323139505 is about 686.2199688695.

The spelling of 323139505 in words is "three hundred twenty-three million, one hundred thirty-nine thousand, five hundred five".