1312131131222 has 4 divisors (see below), whose sum is σ = 1968196696836. Its totient is φ = 656065565610.

The previous prime is 1312131131203. The next prime is 1312131131231. The reversal of 1312131131222 is 2221311312131.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 328032782804 + ... + 328032782807.

It is an arithmetic number, because the mean of its divisors is an integer number (492049174209).

Almost surely, 2^{1312131131222} is an apocalyptic number.

1312131131222 is a deficient number, since it is larger than the sum of its proper divisors (656065565614).

1312131131222 is an equidigital number, since it uses as much as digits as its factorization.

1312131131222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656065565613.

The product of its digits is 432, while the sum is 23.

Adding to 1312131131222 its reverse (2221311312131), we get a palindrome (3533442443353).

The spelling of 1312131131222 in words is "one trillion, three hundred twelve billion, one hundred thirty-one million, one hundred thirty-one thousand, two hundred twenty-two".