1312322145421 has 8 divisors (see below), whose sum is σ = 1499858197184. Its totient is φ = 1124801458560.

The previous prime is 1312322145391. The next prime is 1312322145437. The reversal of 1312322145421 is 1245412232131.

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 1312322145421 - 2⁹ = 1312322144909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312322155421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3657615 + ... + 4000348.

It is an arithmetic number, because the mean of its divisors is an integer number (187482274648).

Almost surely, 2^{1312322145421} is an apocalyptic number.

It is an amenable number.

1312322145421 is a deficient number, since it is larger than the sum of its proper divisors (187536051763).

1312322145421 is an equidigital number, since it uses as much as digits as its factorization.

1312322145421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7682451.

The product of its digits is 11520, while the sum is 31.

Adding to 1312322145421 its reverse (1245412232131), we get a palindrome (2557734377552).

The spelling of 1312322145421 in words is "one trillion, three hundred twelve billion, three hundred twenty-two million, one hundred forty-five thousand, four hundred twenty-one".