231212103233 has 4 divisors (see below), whose sum is σ = 238670558208. Its totient is φ = 223753648260.

The previous prime is 231212103229. The next prime is 231212103259. The reversal of 231212103233 is 332301212132.

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 231212103233 - 2² = 231212103229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231212103199 and 231212103208.

It is not an unprimeable number, because it can be changed into a prime (231212103833) 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, 3729227441 + ... + 3729227502.

It is an arithmetic number, because the mean of its divisors is an integer number (59667639552).

Almost surely, 2^231212103233 is an apocalyptic number.

It is an amenable number.

231212103233 is a deficient number, since it is larger than the sum of its proper divisors (7458454975).

231212103233 is an equidigital number, since it uses as much as digits as its factorization.

231212103233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7458454974.

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

Adding to 231212103233 its reverse (332301212132), we get a palindrome (563513315365).

The spelling of 231212103233 in words is "two hundred thirty-one billion, two hundred twelve million, one hundred three thousand, two hundred thirty-three".