2001310323321 has 32 divisors (see below), whose sum is σ = 2682332133120. Its totient is φ = 1327272873984.

The previous prime is 2001310323283. The next prime is 2001310323329. The reversal of 2001310323321 is 1233230131002.

It is not a de Polignac number, because 2001310323321 - 2¹³ = 2001310315129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001310323329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 771811401 + ... + 771813993.

It is an arithmetic number, because the mean of its divisors is an integer number (83822879160).

Almost surely, 2^{2001310323321} is an apocalyptic number.

It is an amenable number.

2001310323321 is a deficient number, since it is larger than the sum of its proper divisors (681021809799).

2001310323321 is a wasteful number, since it uses less digits than its factorization.

2001310323321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 2001310323321 its reverse (1233230131002), we get a palindrome (3234540454323).

The spelling of 2001310323321 in words is "two trillion, one billion, three hundred ten million, three hundred twenty-three thousand, three hundred twenty-one".