2001203201231 has 16 divisors (see below), whose sum is σ = 2229523820160. Its totient is φ = 1783512380160.

The previous prime is 2001203201209. The next prime is 2001203201279. The reversal of 2001203201231 is 1321023021002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001203201231 is a prime.

It is a super-2 number, since 2×2001203201231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001203201131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17995706 + ... + 18106568.

It is an arithmetic number, because the mean of its divisors is an integer number (139345238760).

Almost surely, 2^{2001203201231} is an apocalyptic number.

2001203201231 is a deficient number, since it is larger than the sum of its proper divisors (228320618929).

2001203201231 is a wasteful number, since it uses less digits than its factorization.

2001203201231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158786.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2001203201231 its reverse (1321023021002), we get a palindrome (3322226222233).

The spelling of 2001203201231 in words is "two trillion, one billion, two hundred three million, two hundred one thousand, two hundred thirty-one".