321340136 has 32 divisors (see below), whose sum is σ = 650772360. Its totient is φ = 147873792.

The previous prime is 321340111. The next prime is 321340157. The reversal of 321340136 is 631043123.

It can be written as a sum of positive squares in 4 ways, for example, as 266668900 + 54671236 = 16330^2 + 7394^2 .

It is an unprimeable number.

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, 32336 + ... + 41088.

Almost surely, 2^321340136 is an apocalyptic number.

It is an amenable number.

321340136 is an abundant number, since it is smaller than the sum of its proper divisors (329432224).

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

321340136 is a wasteful number, since it uses less digits than its factorization.

321340136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9125 (or 9121 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 321340136 is about 17925.9626240824. The cubic root of 321340136 is about 684.9438823085.

Adding to 321340136 its reverse (631043123), we get a palindrome (952383259).

The spelling of 321340136 in words is "three hundred twenty-one million, three hundred forty thousand, one hundred thirty-six".