312231233233 has 4 divisors (see below), whose sum is σ = 312297374628. Its totient is φ = 312165091840.

The previous prime is 312231233177. The next prime is 312231233407. The reversal of 312231233233 is 332332132213.

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 204418824129 + 107812409104 = 452127^2 + 328348^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312231233233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312231213233) 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, 33063616 + ... + 33073057.

It is an arithmetic number, because the mean of its divisors is an integer number (78074343657).

Almost surely, 2^312231233233 is an apocalyptic number.

It is an amenable number.

312231233233 is a deficient number, since it is larger than the sum of its proper divisors (66141395).

312231233233 is an equidigital number, since it uses as much as digits as its factorization.

312231233233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66141394.

The product of its digits is 11664, while the sum is 28.

Adding to 312231233233 its reverse (332332132213), we get a palindrome (644563365446).

The spelling of 312231233233 in words is "three hundred twelve billion, two hundred thirty-one million, two hundred thirty-three thousand, two hundred thirty-three".