1312331232340 has 24 divisors (see below), whose sum is σ = 2900942724960. Its totient is φ = 497304466848.

The previous prime is 1312331232307. The next prime is 1312331232353. The reversal of 1312331232340 is 432321332131.

It is a junction number, because it is equal to n+sod(n) for n = 1312331232299 and 1312331232308.

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 in 7 ways as a sum of consecutive naturals, for example, 1726751242 + ... + 1726752001.

It is an arithmetic number, because the mean of its divisors is an integer number (120872613540).

Almost surely, 2^{1312331232340} is an apocalyptic number.

1312331232340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312331232340 is an abundant number, since it is smaller than the sum of its proper divisors (1588611492620).

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

1312331232340 is a wasteful number, since it uses less digits than its factorization.

1312331232340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453503271 (or 3453503269 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 1312331232340 its reverse (432321332131), we get a palindrome (1744652564471).

The spelling of 1312331232340 in words is "one trillion, three hundred twelve billion, three hundred thirty-one million, two hundred thirty-two thousand, three hundred forty".