2001232231 has 12 divisors (see below), whose sum is σ = 2218313232. Its totient is φ = 1801614848.

The previous prime is 2001232229. The next prime is 2001232237. The reversal of 2001232231 is 1322321002.

It is not a de Polignac number, because 2001232231 - 2¹ = 2001232229 is a prime.

It is a super-2 number, since 2×2001232231² = 8009860884786474722, which 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 (2001232237) 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, 143890 + ... + 157183.

It is an arithmetic number, because the mean of its divisors is an integer number (184859436).

Almost surely, 2^2001232231 is an apocalyptic number.

2001232231 is a deficient number, since it is larger than the sum of its proper divisors (217081001).

2001232231 is a wasteful number, since it uses less digits than its factorization.

2001232231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301130 (or 301113 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2001232231 is about 44735.1341900301. The cubic root of 2001232231 is about 1260.1797490685.

Adding to 2001232231 its reverse (1322321002), we get a palindrome (3323553233).

The spelling of 2001232231 in words is "two billion, one million, two hundred thirty-two thousand, two hundred thirty-one".