231331232201 has 4 divisors (see below), whose sum is σ = 231416565504. Its totient is φ = 231245898900.

The previous prime is 231331232161. The next prime is 231331232213. The reversal of 231331232201 is 102232133132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231331232201 - 2²² = 231327037897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231331232221) 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, 42662585 + ... + 42668006.

It is an arithmetic number, because the mean of its divisors is an integer number (57854141376).

Almost surely, 2^231331232201 is an apocalyptic number.

It is an amenable number.

231331232201 is a deficient number, since it is larger than the sum of its proper divisors (85333303).

231331232201 is an equidigital number, since it uses as much as digits as its factorization.

231331232201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85333302.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231331232201 its reverse (102232133132), we get a palindrome (333563365333).

The spelling of 231331232201 in words is "two hundred thirty-one billion, three hundred thirty-one million, two hundred thirty-two thousand, two hundred one".