231201332233 has 4 divisors (see below), whose sum is σ = 233584851220. Its totient is φ = 228817813248.

The previous prime is 231201332209. The next prime is 231201332261. The reversal of 231201332233 is 332233102132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 159769682944 + 71431649289 = 399712^2 + 267267^2 .

It is a cyclic number.

It is not a de Polignac number, because 231201332233 - 2²⁵ = 231167777801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231201332198 and 231201332207.

It is not an unprimeable number, because it can be changed into a prime (231201332293) 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, 1191759348 + ... + 1191759541.

It is an arithmetic number, because the mean of its divisors is an integer number (58396212805).

Almost surely, 2^231201332233 is an apocalyptic number.

It is an amenable number.

231201332233 is a deficient number, since it is larger than the sum of its proper divisors (2383518987).

231201332233 is an equidigital number, since it uses as much as digits as its factorization.

231201332233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383518986.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 231201332233 its reverse (332233102132), we get a palindrome (563434434365).

The spelling of 231201332233 in words is "two hundred thirty-one billion, two hundred one million, three hundred thirty-two thousand, two hundred thirty-three".