312231001222 has 16 divisors (see below), whose sum is σ = 535279820832. Its totient is φ = 133806617280.

The previous prime is 312231001213. The next prime is 312231001223. The reversal of 312231001222 is 222100132213.

It is a self number, because there is not a number n which added to its sum of digits gives 312231001222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312231001223) 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 7 ways as a sum of consecutive naturals, for example, 259353 + ... + 831700.

It is an arithmetic number, because the mean of its divisors is an integer number (33454988802).

Almost surely, 2^312231001222 is an apocalyptic number.

312231001222 is a deficient number, since it is larger than the sum of its proper divisors (223048819610).

312231001222 is a wasteful number, since it uses less digits than its factorization.

312231001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111503.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 312231001222 its reverse (222100132213), we get a palindrome (534331133435).

The spelling of 312231001222 in words is "three hundred twelve billion, two hundred thirty-one million, one thousand, two hundred twenty-two".