2001213313231 has 8 divisors (see below), whose sum is σ = 2183299283664. Its totient is φ = 1819153590720.

The previous prime is 2001213313223. The next prime is 2001213313243. The reversal of 2001213313231 is 1323133121002.

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 2001213313231 - 2³ = 2001213313223 is a prime.

It is a super-2 number, since 2×2001213313231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001219313231) 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, 6402390 + ... + 6707683.

It is an arithmetic number, because the mean of its divisors is an integer number (272912410458).

Almost surely, 2^{2001213313231} is an apocalyptic number.

2001213313231 is a deficient number, since it is larger than the sum of its proper divisors (182085970433).

2001213313231 is a wasteful number, since it uses less digits than its factorization.

2001213313231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13123961.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2001213313231 its reverse (1323133121002), we get a palindrome (3324346434233).

The spelling of 2001213313231 in words is "two trillion, one billion, two hundred thirteen million, three hundred thirteen thousand, two hundred thirty-one".