131103131313 has 32 divisors (see below), whose sum is σ = 219738857472. Its totient is φ = 68105508240.

The previous prime is 131103131273. The next prime is 131103131329. The reversal of 131103131313 is 313131301131.

It is not a de Polignac number, because 131103131313 - 2¹² = 131103127217 is a prime.

It is a super-2 number, since 2×131103131313² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 131103131313.

It is not an unprimeable number, because it can be changed into a prime (131103131363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2317281 + ... + 2373182.

It is an arithmetic number, because the mean of its divisors is an integer number (6866839296).

Almost surely, 2^131103131313 is an apocalyptic number.

It is an amenable number.

131103131313 is a deficient number, since it is larger than the sum of its proper divisors (88635726159).

131103131313 is an equidigital number, since it uses as much as digits as its factorization.

131103131313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4690506 (or 4690484 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 21.

Adding to 131103131313 its reverse (313131301131), we get a palindrome (444234432444).

The spelling of 131103131313 in words is "one hundred thirty-one billion, one hundred three million, one hundred thirty-one thousand, three hundred thirteen".