321165220413 has 8 divisors (see below), whose sum is σ = 453409723008. Its totient is φ = 201515432384.

The previous prime is 321165220399. The next prime is 321165220427. The reversal of 321165220413 is 314022561123.

321165220413 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (321165220399) and next prime (321165220427).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321165220413 - 2⁹ = 321165219901 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321165220213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3148678581 + ... + 3148678682.

It is an arithmetic number, because the mean of its divisors is an integer number (56676215376).

Almost surely, 2^321165220413 is an apocalyptic number.

It is an amenable number.

321165220413 is a deficient number, since it is larger than the sum of its proper divisors (132244502595).

321165220413 is a wasteful number, since it uses less digits than its factorization.

321165220413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6297357283.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 321165220413 its reverse (314022561123), we get a palindrome (635187781536).

The spelling of 321165220413 in words is "three hundred twenty-one billion, one hundred sixty-five million, two hundred twenty thousand, four hundred thirteen".