312231111211 has 8 divisors (see below), whose sum is σ = 316102026240. Its totient is φ = 308362793832.

The previous prime is 312231111187. The next prime is 312231111233. The reversal of 312231111211 is 112111132213.

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

It is a cyclic number.

It is not a de Polignac number, because 312231111211 - 2⁷ = 312231111083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312231112211) 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, 406971 + ... + 888868.

It is an arithmetic number, because the mean of its divisors is an integer number (39512753280).

Almost surely, 2^312231111211 is an apocalyptic number.

312231111211 is a deficient number, since it is larger than the sum of its proper divisors (3870915029).

312231111211 is a wasteful number, since it uses less digits than its factorization.

312231111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298825.

The product of its digits is 72, while the sum is 19.

Adding to 312231111211 its reverse (112111132213), we get a palindrome (424342243424).

The spelling of 312231111211 in words is "three hundred twelve billion, two hundred thirty-one million, one hundred eleven thousand, two hundred eleven".