1312142303421 has 12 divisors (see below), whose sum is σ = 1895339120220. Its totient is φ = 874751169600.

The previous prime is 1312142303413. The next prime is 1312142303597. The reversal of 1312142303421 is 1243032412131.

1312142303421 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 1 + 4 + 230 + 3 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1115706312900 + 196435990521 = 1056270^2 + 443211^2 .

It is not a de Polignac number, because 1312142303421 - 2³ = 1312142303413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312142303411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18630 + ... + 1620071.

It is an arithmetic number, because the mean of its divisors is an integer number (157944926685).

Almost surely, 2^{1312142303421} is an apocalyptic number.

It is an amenable number.

1312142303421 is a deficient number, since it is larger than the sum of its proper divisors (583196816799).

1312142303421 is a wasteful number, since it uses less digits than its factorization.

1312142303421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727676 (or 1727673 counting only the distinct ones).

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

Adding to 1312142303421 its reverse (1243032412131), we get a palindrome (2555174715552).

The spelling of 1312142303421 in words is "one trillion, three hundred twelve billion, one hundred forty-two million, three hundred three thousand, four hundred twenty-one".