131355110105513 has 4 divisors (see below), whose sum is σ = 150120125834880. Its totient is φ = 112590094376148.

The previous prime is 131355110105473. The next prime is 131355110105539. The reversal of 131355110105513 is 315501011553131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131355110105513 - 2²⁰ = 131355109056937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131355110305513) 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, 9382507864673 + ... + 9382507864686.

It is an arithmetic number, because the mean of its divisors is an integer number (37530031458720).

Almost surely, 2^{131355110105513} is an apocalyptic number.

It is an amenable number.

131355110105513 is a deficient number, since it is larger than the sum of its proper divisors (18765015729367).

131355110105513 is an equidigital number, since it uses as much as digits as its factorization.

131355110105513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18765015729366.

The product of its (nonzero) digits is 16875, while the sum is 35.

Adding to 131355110105513 its reverse (315501011553131), we get a palindrome (446856121658644).

The spelling of 131355110105513 in words is "one hundred thirty-one trillion, three hundred fifty-five billion, one hundred ten million, one hundred five thousand, five hundred thirteen".