321276340 has 72 divisors (see below), whose sum is σ = 856209312. Its totient is φ = 100134720.

The previous prime is 321276337. The next prime is 321276341. The reversal of 321276340 is 43672123.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 321276299 and 321276308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321276341) 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 23 ways as a sum of consecutive naturals, for example, 4122 + ... + 25681.

It is an arithmetic number, because the mean of its divisors is an integer number (11891796).

Almost surely, 2^321276340 is an apocalyptic number.

It is an amenable number.

321276340 is an abundant number, since it is smaller than the sum of its proper divisors (534932972).

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

321276340 is a wasteful number, since it uses less digits than its factorization.

321276340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29837 (or 29828 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 321276340 is about 17924.1831055142. The cubic root of 321276340 is about 684.8985517620.

The spelling of 321276340 in words is "three hundred twenty-one million, two hundred seventy-six thousand, three hundred forty".