1312321140342 has 24 divisors (see below), whose sum is σ = 2846302904016. Its totient is φ = 436988005776.

The previous prime is 1312321140313. The next prime is 1312321140371. The reversal of 1312321140342 is 2430411232131.

1312321140342 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 3 + 211 + 403 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (1312321140313) and next prime (1312321140371).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37679973 + ... + 37714784.

It is an arithmetic number, because the mean of its divisors is an integer number (118595954334).

Almost surely, 2^{1312321140342} is an apocalyptic number.

1312321140342 is an abundant number, since it is smaller than the sum of its proper divisors (1533981763674).

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

1312321140342 is a wasteful number, since it uses less digits than its factorization.

1312321140342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75395732 (or 75395729 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 1312321140342 its reverse (2430411232131), we get a palindrome (3742732372473).

The spelling of 1312321140342 in words is "one trillion, three hundred twelve billion, three hundred twenty-one million, one hundred forty thousand, three hundred forty-two".