105311643 has 8 divisors (see below), whose sum is σ = 140548368. Its totient is φ = 70141344.

The previous prime is 105311627. The next prime is 105311659. The reversal of 105311643 is 346113501.

It is an interprime number because it is at equal distance from previous prime (105311627) and next prime (105311659).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105311643 - 2⁴ = 105311627 is a prime.

It is a super-2 number, since 2×105311643² = 22181084302718898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105311683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12780 + ... + 19337.

It is an arithmetic number, because the mean of its divisors is an integer number (17568546).

Almost surely, 2^105311643 is an apocalyptic number.

105311643 is a deficient number, since it is larger than the sum of its proper divisors (35236725).

105311643 is a wasteful number, since it uses less digits than its factorization.

105311643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33213.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 105311643 is about 10262.1461205734. The cubic root of 105311643 is about 472.2356787082.

The spelling of 105311643 in words is "one hundred five million, three hundred eleven thousand, six hundred forty-three".