312212132231 has 8 divisors (see below), whose sum is σ = 330790993200. Its totient is φ = 293656987008.

The previous prime is 312212132209. The next prime is 312212132249. The reversal of 312212132231 is 132231212213.

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 312212132231 - 2¹⁰ = 312212131207 is a prime.

It is a super-2 number, since 2×312212132231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312212132197 and 312212132206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312212132251) 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, 5901821 + ... + 5954486.

It is an arithmetic number, because the mean of its divisors is an integer number (41348874150).

Almost surely, 2^312212132231 is an apocalyptic number.

312212132231 is a deficient number, since it is larger than the sum of its proper divisors (18578860969).

312212132231 is a wasteful number, since it uses less digits than its factorization.

312212132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11857873.

The product of its digits is 864, while the sum is 23.

Adding to 312212132231 its reverse (132231212213), we get a palindrome (444443344444).

The spelling of 312212132231 in words is "three hundred twelve billion, two hundred twelve million, one hundred thirty-two thousand, two hundred thirty-one".