1312421131345 has 16 divisors (see below), whose sum is σ = 1601658210240. Its totient is φ = 1032102993600.

The previous prime is 1312421131331. The next prime is 1312421131369. The reversal of 1312421131345 is 5431311242131.

It is a happy number.

It is not a de Polignac number, because 1312421131345 - 2¹¹ = 1312421129297 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 9908455 + ... + 10040035.

It is an arithmetic number, because the mean of its divisors is an integer number (100103638140).

Almost surely, 2^{1312421131345} is an apocalyptic number.

It is an amenable number.

1312421131345 is a deficient number, since it is larger than the sum of its proper divisors (289237078895).

1312421131345 is a wasteful number, since it uses less digits than its factorization.

1312421131345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165456.

The product of its digits is 8640, while the sum is 31.

Adding to 1312421131345 its reverse (5431311242131), we get a palindrome (6743732373476).

The spelling of 1312421131345 in words is "one trillion, three hundred twelve billion, four hundred twenty-one million, one hundred thirty-one thousand, three hundred forty-five".