2001301231231 has 4 divisors (see below), whose sum is σ = 2106632875000. Its totient is φ = 1895969587464.

The previous prime is 2001301231219. The next prime is 2001301231283. The reversal of 2001301231231 is 1321321031002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2001301231231 - 2⁵ = 2001301231199 is a prime.

It is a super-2 number, since 2×2001301231231² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 105331643749 = 2001301231231 / (2 + 0 + 0 + 1 + 3 + 0 + 1 + 2 + 3 + 1 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001301231199 and 2001301231208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001301231201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52665821856 + ... + 52665821893.

It is an arithmetic number, because the mean of its divisors is an integer number (526658218750).

Almost surely, 2^{2001301231231} is an apocalyptic number.

2001301231231 is a deficient number, since it is larger than the sum of its proper divisors (105331643769).

2001301231231 is a wasteful number, since it uses less digits than its factorization.

2001301231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105331643768.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 2001301231231 its reverse (1321321031002), we get a palindrome (3322622262233).

The spelling of 2001301231231 in words is "two trillion, one billion, three hundred one million, two hundred thirty-one thousand, two hundred thirty-one".