106981139 has 2 divisors, whose sum is σ = 106981140. Its totient is φ = 106981138.

The previous prime is 106981123. The next prime is 106981157. The reversal of 106981139 is 931189601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 106981139 - 2⁴ = 106981123 is a prime.

It is a super-2 number, since 2×106981139² = 22889928203474642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (106981159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53490569 + 53490570.

It is an arithmetic number, because the mean of its divisors is an integer number (53490570).

Almost surely, 2^106981139 is an apocalyptic number.

106981139 is a deficient number, since it is larger than the sum of its proper divisors (1).

106981139 is an equidigital number, since it uses as much as digits as its factorization.

106981139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 106981139 is about 10343.1687117633. The cubic root of 106981139 is about 474.7180435615.

The spelling of 106981139 in words is "one hundred six million, nine hundred eighty-one thousand, one hundred thirty-nine".