106731239 has 2 divisors, whose sum is σ = 106731240. Its totient is φ = 106731238.

The previous prime is 106731221. The next prime is 106731299. The reversal of 106731239 is 932137601.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 106731239 - 2⁸ = 106730983 is a prime.

It is a super-2 number, since 2×106731239² = 22783114756950242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106731299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53365619 + 53365620.

It is an arithmetic number, because the mean of its divisors is an integer number (53365620).

Almost surely, 2^106731239 is an apocalyptic number.

106731239 is a deficient number, since it is larger than the sum of its proper divisors (1).

106731239 is an equidigital number, since it uses as much as digits as its factorization.

106731239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 106731239 is about 10331.0812115674. The cubic root of 106731239 is about 474.3481200026.

The spelling of 106731239 in words is "one hundred six million, seven hundred thirty-one thousand, two hundred thirty-nine".