105207631 has 4 divisors (see below), whose sum is σ = 105244000. Its totient is φ = 105171264.

The previous prime is 105207607. The next prime is 105207637. The reversal of 105207631 is 136702501.

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 105207631 - 2⁹ = 105207119 is a prime.

It is a super-2 number, since 2×105207631² = 22137291241264322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105207596 and 105207605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105207637) 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, 13431 + ... + 19768.

It is an arithmetic number, because the mean of its divisors is an integer number (26311000).

Almost surely, 2^105207631 is an apocalyptic number.

105207631 is a deficient number, since it is larger than the sum of its proper divisors (36369).

105207631 is an equidigital number, since it uses as much as digits as its factorization.

105207631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36368.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 105207631 is about 10257.0771177758. The cubic root of 105207631 is about 472.0801582118.

The spelling of 105207631 in words is "one hundred five million, two hundred seven thousand, six hundred thirty-one".