1312232131321 has 8 divisors (see below), whose sum is σ = 1369681418304. Its totient is φ = 1254815820720.

The previous prime is 1312232131313. The next prime is 1312232131387. The reversal of 1312232131321 is 1231312322131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312232131321 - 2³ = 1312232131313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312232131121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8162751 + ... + 8321956.

It is an arithmetic number, because the mean of its divisors is an integer number (171210177288).

Almost surely, 2^{1312232131321} is an apocalyptic number.

It is an amenable number.

1312232131321 is a deficient number, since it is larger than the sum of its proper divisors (57449286983).

1312232131321 is a wasteful number, since it uses less digits than its factorization.

1312232131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16488191.

The product of its digits is 1296, while the sum is 25.

Adding to 1312232131321 its reverse (1231312322131), we get a palindrome (2543544453452).

The spelling of 1312232131321 in words is "one trillion, three hundred twelve billion, two hundred thirty-two million, one hundred thirty-one thousand, three hundred twenty-one".