106831939 has 2 divisors, whose sum is σ = 106831940. Its totient is φ = 106831938.

The previous prime is 106831919. The next prime is 106831943. The reversal of 106831939 is 939138601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106831939 is a prime.

It is a super-2 number, since 2×106831939² = 22826126380999442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106831919) 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, 53415969 + 53415970.

It is an arithmetic number, because the mean of its divisors is an integer number (53415970).

Almost surely, 2^106831939 is an apocalyptic number.

106831939 is a deficient number, since it is larger than the sum of its proper divisors (1).

106831939 is an equidigital number, since it uses as much as digits as its factorization.

106831939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 106831939 is about 10335.9537053917. The cubic root of 106831939 is about 474.4972542251.

The spelling of 106831939 in words is "one hundred six million, eight hundred thirty-one thousand, nine hundred thirty-nine".