1312231223322 has 48 divisors (see below), whose sum is σ = 2955997175040. Its totient is φ = 420255043200.

The previous prime is 1312231223321. The next prime is 1312231223323. The reversal of 1312231223322 is 2233221322131.

1312231223322 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 2 + 312 + 23 + 322 = 666.

It is an interprime number because it is at equal distance from previous prime (1312231223321) and next prime (1312231223323).

It is a super-2 number, since 2×1312231223322² (a number of 25 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1312231223321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8381679 + ... + 8536802.

It is an arithmetic number, because the mean of its divisors is an integer number (61583274480).

Almost surely, 2^{1312231223322} is an apocalyptic number.

1312231223322 is an abundant number, since it is smaller than the sum of its proper divisors (1643765951718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312231223322 is a wasteful number, since it uses less digits than its factorization.

1312231223322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16918659 (or 16918656 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 1312231223322 its reverse (2233221322131), we get a palindrome (3545452545453).

The spelling of 1312231223322 in words is "one trillion, three hundred twelve billion, two hundred thirty-one million, two hundred twenty-three thousand, three hundred twenty-two".