312222303131 has 4 divisors (see below), whose sum is σ = 312432838872. Its totient is φ = 312011767392.

The previous prime is 312222303109. The next prime is 312222303157. The reversal of 312222303131 is 131303222213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312222303131 is a prime.

It is a super-2 number, since 2×312222303131² (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 = 312222303097 and 312222303106.

It is not an unprimeable number, because it can be changed into a prime (312222303431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105265646 + ... + 105268611.

It is an arithmetic number, because the mean of its divisors is an integer number (78108209718).

Almost surely, 2^312222303131 is an apocalyptic number.

312222303131 is a deficient number, since it is larger than the sum of its proper divisors (210535741).

312222303131 is a wasteful number, since it uses less digits than its factorization.

312222303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210535740.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 312222303131 its reverse (131303222213), we get a palindrome (443525525344).

The spelling of 312222303131 in words is "three hundred twelve billion, two hundred twenty-two million, three hundred three thousand, one hundred thirty-one".