105931643 has 2 divisors, whose sum is σ = 105931644. Its totient is φ = 105931642.

The previous prime is 105931633. The next prime is 105931667. The reversal of 105931643 is 346139501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105931643 - 2⁸ = 105931387 is a prime.

It is a super-2 number, since 2×105931643² = 22443025977358898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105931603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52965821 + 52965822.

It is an arithmetic number, because the mean of its divisors is an integer number (52965822).

Almost surely, 2^105931643 is an apocalyptic number.

105931643 is a deficient number, since it is larger than the sum of its proper divisors (1).

105931643 is an equidigital number, since it uses as much as digits as its factorization.

105931643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 105931643 is about 10292.3098962283. The cubic root of 105931643 is about 473.1605951824.

The spelling of 105931643 in words is "one hundred five million, nine hundred thirty-one thousand, six hundred forty-three".