105512531413 has 4 divisors (see below), whose sum is σ = 111065822560. Its totient is φ = 99959240268.

The previous prime is 105512531407. The next prime is 105512531447. The reversal of 105512531413 is 314135215501.

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 105512531413 - 2³³ = 96922596821 is a prime.

It is a super-2 number, since 2×105512531413² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105512531473) 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 3 ways as a sum of consecutive naturals, for example, 2776645545 + ... + 2776645582.

It is an arithmetic number, because the mean of its divisors is an integer number (27766455640).

Almost surely, 2^105512531413 is an apocalyptic number.

It is an amenable number.

105512531413 is a deficient number, since it is larger than the sum of its proper divisors (5553291147).

105512531413 is an equidigital number, since it uses as much as digits as its factorization.

105512531413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553291146.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 105512531413 its reverse (314135215501), we get a palindrome (419647746914).

The spelling of 105512531413 in words is "one hundred five billion, five hundred twelve million, five hundred thirty-one thousand, four hundred thirteen".