1313413345531 has 4 divisors (see below), whose sum is σ = 1501043823472. Its totient is φ = 1125782867592.

The previous prime is 1313413345529. The next prime is 1313413345549. The reversal of 1313413345531 is 1355433143131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1313413345531 - 2¹ = 1313413345529 is a prime.

It is a super-2 number, since 2×1313413345531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313413345511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93815238960 + ... + 93815238973.

It is an arithmetic number, because the mean of its divisors is an integer number (375260955868).

Almost surely, 2^{1313413345531} is an apocalyptic number.

1313413345531 is a deficient number, since it is larger than the sum of its proper divisors (187630477941).

1313413345531 is an equidigital number, since it uses as much as digits as its factorization.

1313413345531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187630477940.

The product of its digits is 97200, while the sum is 37.

Adding to 1313413345531 its reverse (1355433143131), we get a palindrome (2668846488662).

It can be divided in two parts, 1313413 and 345531, that added together give a square (1658944 = 1288²).

The spelling of 1313413345531 in words is "one trillion, three hundred thirteen billion, four hundred thirteen million, three hundred forty-five thousand, five hundred thirty-one".