2001312322331 has 12 divisors (see below), whose sum is σ = 2328316348680. Its totient is φ = 1715219604000.

The previous prime is 2001312322297. The next prime is 2001312322343. The reversal of 2001312322331 is 1332232131002.

It is not a de Polignac number, because 2001312322331 - 2²⁶ = 2001245213467 is a prime.

It is a super-2 number, since 2×2001312322331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001312322297 and 2001312322306.

It is not an unprimeable number, because it can be changed into a prime (2001312322351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1827761 + ... + 2709858.

It is an arithmetic number, because the mean of its divisors is an integer number (194026362390).

Almost surely, 2^{2001312322331} is an apocalyptic number.

2001312322331 is a deficient number, since it is larger than the sum of its proper divisors (327004026349).

2001312322331 is an equidigital number, since it uses as much as digits as its factorization.

2001312322331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546634 (or 4546627 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2001312322331 its reverse (1332232131002), we get a palindrome (3333544453333).

The spelling of 2001312322331 in words is "two trillion, one billion, three hundred twelve million, three hundred twenty-two thousand, three hundred thirty-one".