1312231332312 has 64 divisors (see below), whose sum is σ = 3645297189600. Its totient is φ = 437385225600.

The previous prime is 1312231332281. The next prime is 1312231332319. The reversal of 1312231332312 is 2132331322131.

1312231332312 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 2 + 313 + 32 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312231332319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3787038 + ... + 4118994.

Almost surely, 2^{1312231332312} is an apocalyptic number.

1312231332312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312231332312 is an abundant number, since it is smaller than the sum of its proper divisors (2333065857288).

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

1312231332312 is a wasteful number, since it uses less digits than its factorization.

1312231332312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350273 (or 350263 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 1312231332312 its reverse (2132331322131), we get a palindrome (3444562654443).

The spelling of 1312231332312 in words is "one trillion, three hundred twelve billion, two hundred thirty-one million, three hundred thirty-two thousand, three hundred twelve".