321053140 has 12 divisors (see below), whose sum is σ = 674211636. Its totient is φ = 128421248.

The previous prime is 321053101. The next prime is 321053141. The reversal of 321053140 is 41350123.

It can be written as a sum of positive squares in 2 ways, for example, as 128731716 + 192321424 = 11346^2 + 13868^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321053141) 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 3 ways as a sum of consecutive naturals, for example, 8026309 + ... + 8026348.

It is an arithmetic number, because the mean of its divisors is an integer number (56184303).

Almost surely, 2^321053140 is an apocalyptic number.

It is an amenable number.

321053140 is an abundant number, since it is smaller than the sum of its proper divisors (353158496).

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

321053140 is a wasteful number, since it uses less digits than its factorization.

321053140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16052666 (or 16052664 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 321053140 is about 17917.9557985837. The cubic root of 321053140 is about 684.7399087162.

It can be divided in two parts, 32105 and 3140, that added together give a triangular number (35245 = T₂₆₅).

The spelling of 321053140 in words is "three hundred twenty-one million, fifty-three thousand, one hundred forty".