2001312230331 has 32 divisors (see below), whose sum is σ = 2983588611840. Its totient is φ = 1185833585664.

The previous prime is 2001312230311. The next prime is 2001312230339. The reversal of 2001312230331 is 1330322131002.

It is not a de Polignac number, because 2001312230331 - 2¹⁴ = 2001312213947 is a prime.

It is a super-2 number, since 2×2001312230331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001312230298 and 2001312230307.

It is not an unprimeable number, because it can be changed into a prime (2001312230339) 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, 2995965 + ... + 3602558.

It is an arithmetic number, because the mean of its divisors is an integer number (93237144120).

Almost surely, 2^{2001312230331} is an apocalyptic number.

2001312230331 is a deficient number, since it is larger than the sum of its proper divisors (982276381509).

2001312230331 is a wasteful number, since it uses less digits than its factorization.

2001312230331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6598875.

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

Adding to 2001312230331 its reverse (1330322131002), we get a palindrome (3331634361333).

The spelling of 2001312230331 in words is "two trillion, one billion, three hundred twelve million, two hundred thirty thousand, three hundred thirty-one".