321025213989 has 12 divisors (see below), whose sum is σ = 490979739276. Its totient is φ = 201427585152.

The previous prime is 321025213981. The next prime is 321025213997. The reversal of 321025213989 is 989312520123.

321025213989 is a `hidden beast` number, since 3 + 2 + 1 + 0 + 252 + 1 + 398 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (321025213981) and next prime (321025213997).

It can be written as a sum of positive squares in 2 ways, for example, as 106901533764 + 214123680225 = 326958^2 + 462735^2 .

It is not a de Polignac number, because 321025213989 - 2³ = 321025213981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321025213981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1049101854 + ... + 1049102159.

It is an arithmetic number, because the mean of its divisors is an integer number (40914978273).

Almost surely, 2^321025213989 is an apocalyptic number.

It is an amenable number.

321025213989 is a deficient number, since it is larger than the sum of its proper divisors (169954525287).

321025213989 is a wasteful number, since it uses less digits than its factorization.

321025213989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098204036 (or 2098204033 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 321025213989 in words is "three hundred twenty-one billion, twenty-five million, two hundred thirteen thousand, nine hundred eighty-nine".