1315440431345 has 16 divisors (see below), whose sum is σ = 1586309598720. Its totient is φ = 1047169140864.

The previous prime is 1315440431341. The next prime is 1315440431353. The reversal of 1315440431345 is 5431340445131.

It is a cyclic number.

It is not a de Polignac number, because 1315440431345 - 2² = 1315440431341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1315440431299 and 1315440431308.

It is not an unprimeable number, because it can be changed into a prime (1315440431341) by changing a digit.

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, 2267501 + ... + 2787909.

It is an arithmetic number, because the mean of its divisors is an integer number (99144349920).

Almost surely, 2^{1315440431345} is an apocalyptic number.

It is an amenable number.

1315440431345 is a deficient number, since it is larger than the sum of its proper divisors (270869167375).

1315440431345 is a wasteful number, since it uses less digits than its factorization.

1315440431345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522904.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 1315440431345 its reverse (5431340445131), we get a palindrome (6746780876476).

The spelling of 1315440431345 in words is "one trillion, three hundred fifteen billion, four hundred forty million, four hundred thirty-one thousand, three hundred forty-five".