312122023243231 has 4 divisors (see below), whose sum is σ = 312123053322352. Its totient is φ = 312120993164112.

The previous prime is 312122023243229. The next prime is 312122023243237. The reversal of 312122023243231 is 132342320221213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312122023243231 - 2¹ = 312122023243229 is a prime.

It is a super-2 number, since 2×312122023243231² (a number of 30 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 = 312122023243193 and 312122023243202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312122023243237) 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, 514584915 + ... + 515191108.

It is an arithmetic number, because the mean of its divisors is an integer number (78030763330588).

Almost surely, 2^{312122023243231} is an apocalyptic number.

312122023243231 is a deficient number, since it is larger than the sum of its proper divisors (1030079121).

312122023243231 is a wasteful number, since it uses less digits than its factorization.

312122023243231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030079120.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 312122023243231 its reverse (132342320221213), we get a palindrome (444464343464444).

The spelling of 312122023243231 in words is "three hundred twelve trillion, one hundred twenty-two billion, twenty-three million, two hundred forty-three thousand, two hundred thirty-one".