321340463161 has 9 divisors (see below), whose sum is σ = 329012245989. Its totient is φ = 313843620636.

The previous prime is 321340463153. The next prime is 321340463209. The reversal of 321340463161 is 161364043123.

The square root of 321340463161 is 566869.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 321340463161 - 2³ = 321340463153 is a prime.

It is a super-2 number, since 2×321340463161² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321340463261) 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 8 ways as a sum of consecutive naturals, for example, 24368776 + ... + 24381958.

It is an arithmetic number, because the mean of its divisors is an integer number (36556916221).

Almost surely, 2^321340463161 is an apocalyptic number.

321340463161 is the 566869-th square number.

321340463161 is the 283435-th centered octagonal number.

It is an amenable number.

321340463161 is a deficient number, since it is larger than the sum of its proper divisors (7671782828).

321340463161 is an frugal number, since it uses more digits than its factorization.

321340463161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26452 (or 13226 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 321340463161 in words is "three hundred twenty-one billion, three hundred forty million, four hundred sixty-three thousand, one hundred sixty-one".