231201233331 has 8 divisors (see below), whose sum is σ = 318212450304. Its totient is φ = 149162085960.

The previous prime is 231201233323. The next prime is 231201233377. The reversal of 231201233331 is 133332102132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231201233331 - 2³ = 231201233323 is a prime.

It is a super-2 number, since 2×231201233331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231201233381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1243017291 + ... + 1243017476.

It is an arithmetic number, because the mean of its divisors is an integer number (39776556288).

Almost surely, 2^231201233331 is an apocalyptic number.

231201233331 is a deficient number, since it is larger than the sum of its proper divisors (87011216973).

231201233331 is a wasteful number, since it uses less digits than its factorization.

231201233331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486034801.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 231201233331 its reverse (133332102132), we get a palindrome (364533335463).

The spelling of 231201233331 in words is "two hundred thirty-one billion, two hundred one million, two hundred thirty-three thousand, three hundred thirty-one".