105731938 has 8 divisors (see below), whose sum is σ = 170797788. Its totient is φ = 48799344.

The previous prime is 105731933. The next prime is 105731939. The reversal of 105731938 is 839137501.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 104101209 + 1630729 = 10203^2 + 1277^2 .

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

It is a super-2 number, since 2×105731938² = 22358485426471688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105731897 and 105731906.

It is not an unprimeable number, because it can be changed into a prime (105731933) 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, 2033281 + ... + 2033332.

Almost surely, 2^105731938 is an apocalyptic number.

105731938 is a deficient number, since it is larger than the sum of its proper divisors (65065850).

105731938 is a wasteful number, since it uses less digits than its factorization.

105731938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066628.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 105731938 is about 10282.6036586071. The cubic root of 105731938 is about 472.8630700484.

The spelling of 105731938 in words is "one hundred five million, seven hundred thirty-one thousand, nine hundred thirty-eight".