106731538 has 4 divisors (see below), whose sum is σ = 160097310. Its totient is φ = 53365768.

The previous prime is 106731533. The next prime is 106731557. The reversal of 106731538 is 835137601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 103693489 + 3038049 = 10183^2 + 1743^2 .

It is a super-2 number, since 2×106731538² = 22783242407690888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106731533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26682883 + ... + 26682886.

Almost surely, 2^106731538 is an apocalyptic number.

106731538 is a deficient number, since it is larger than the sum of its proper divisors (53365772).

106731538 is an equidigital number, since it uses as much as digits as its factorization.

106731538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53365771.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 106731538 is about 10331.0956824530. The cubic root of 106731538 is about 474.3485629531.

The spelling of 106731538 in words is "one hundred six million, seven hundred thirty-one thousand, five hundred thirty-eight".