321321313001 has 4 divisors (see below), whose sum is σ = 346038337092. Its totient is φ = 296604288912.

The previous prime is 321321312997. The next prime is 321321313003. The reversal of 321321313001 is 100313123123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100313123123 = 4973 ⋅20171551.

It can be written as a sum of positive squares in 2 ways, for example, as 49827168400 + 271494144601 = 223220^2 + 521051^2 .

It is a cyclic number.

It is not a de Polignac number, because 321321313001 - 2² = 321321312997 is a prime.

It is a super-2 number, since 2×321321313001² (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 (321321313003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12358512026 + ... + 12358512051.

It is an arithmetic number, because the mean of its divisors is an integer number (86509584273).

Almost surely, 2^321321313001 is an apocalyptic number.

It is an amenable number.

321321313001 is a deficient number, since it is larger than the sum of its proper divisors (24717024091).

321321313001 is a wasteful number, since it uses less digits than its factorization.

321321313001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24717024090.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 321321313001 its reverse (100313123123), we get a palindrome (421634436124).

The spelling of 321321313001 in words is "three hundred twenty-one billion, three hundred twenty-one million, three hundred thirteen thousand, one".