321130276 has 6 divisors (see below), whose sum is σ = 561977990. Its totient is φ = 160565136.

The previous prime is 321130261. The next prime is 321130279. The reversal of 321130276 is 672031123.

It can be written as a sum of positive squares in only one way, i.e., 263218176 + 57912100 = 16224^2 + 7610^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 321130276.

It is not an unprimeable number, because it can be changed into a prime (321130279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40141281 + ... + 40141288.

Almost surely, 2^321130276 is an apocalyptic number.

It is an amenable number.

321130276 is a deficient number, since it is larger than the sum of its proper divisors (240847714).

321130276 is a wasteful number, since it uses less digits than its factorization.

321130276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80282573 (or 80282571 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 321130276 is about 17920.1081469951. The cubic root of 321130276 is about 684.7947427001.

Adding to 321130276 its reverse (672031123), we get a palindrome (993161399).

The spelling of 321130276 in words is "three hundred twenty-one million, one hundred thirty thousand, two hundred seventy-six".