105631506213 has 4 divisors (see below), whose sum is σ = 140842008288. Its totient is φ = 70421004140.

The previous prime is 105631506011. The next prime is 105631506217. The reversal of 105631506213 is 312605136501.

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 105631506213 - 2⁸ = 105631505957 is a prime.

It is a super-2 number, since 2×105631506213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105631506217) 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, 17605251033 + ... + 17605251038.

It is an arithmetic number, because the mean of its divisors is an integer number (35210502072).

Almost surely, 2^105631506213 is an apocalyptic number.

It is an amenable number.

105631506213 is a deficient number, since it is larger than the sum of its proper divisors (35210502075).

105631506213 is an equidigital number, since it uses as much as digits as its factorization.

105631506213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35210502074.

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 105631506213 in words is "one hundred five billion, six hundred thirty-one million, five hundred six thousand, two hundred thirteen".