1313251403343 has 12 divisors (see below), whose sum is σ = 1924654949784. Its totient is φ = 795909941200.

The previous prime is 1313251403329. The next prime is 1313251403351. The reversal of 1313251403343 is 3433041523131.

It is a happy number.

It is not a de Polignac number, because 1313251403343 - 2¹⁶ = 1313251337807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313251413343) 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, 1808885868 + ... + 1808886593.

It is an arithmetic number, because the mean of its divisors is an integer number (160387912482).

Almost surely, 2^{1313251403343} is an apocalyptic number.

1313251403343 is a deficient number, since it is larger than the sum of its proper divisors (611403546441).

1313251403343 is a wasteful number, since it uses less digits than its factorization.

1313251403343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617772486 (or 3617772475 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

Adding to 1313251403343 its reverse (3433041523131), we get a palindrome (4746292926474).

The spelling of 1313251403343 in words is "one trillion, three hundred thirteen billion, two hundred fifty-one million, four hundred three thousand, three hundred forty-three".