312222112031 has 8 divisors (see below), whose sum is σ = 314708469504. Its totient is φ = 309737315160.

The previous prime is 312222112021. The next prime is 312222112109. The reversal of 312222112031 is 130211222213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312222112031 is a prime.

It is a super-2 number, since 2×312222112031² (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 = 312222111994 and 312222112012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312222112021) 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, 13226 + ... + 790328.

It is an arithmetic number, because the mean of its divisors is an integer number (39338558688).

Almost surely, 2^312222112031 is an apocalyptic number.

312222112031 is a deficient number, since it is larger than the sum of its proper divisors (2486357473).

312222112031 is a wasteful number, since it uses less digits than its factorization.

312222112031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780301.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 312222112031 its reverse (130211222213), we get a palindrome (442433334244).

The spelling of 312222112031 in words is "three hundred twelve billion, two hundred twenty-two million, one hundred twelve thousand, thirty-one".