981319105 has 16 divisors (see below), whose sum is σ = 1309077504. Its totient is φ = 701288640.

The previous prime is 981319091. The next prime is 981319109. The reversal of 981319105 is 501913189.

It is a happy number.

It is not a de Polignac number, because 981319105 - 2⁷ = 981318977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981319109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241489 + ... + 245518.

It is an arithmetic number, because the mean of its divisors is an integer number (81817344).

Almost surely, 2^981319105 is an apocalyptic number.

It is an amenable number.

981319105 is a deficient number, since it is larger than the sum of its proper divisors (327758399).

981319105 is a wasteful number, since it uses less digits than its factorization.

981319105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487056.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 981319105 is about 31326.0132318174. The cubic root of 981319105 is about 993.7338524069.

The spelling of 981319105 in words is "nine hundred eighty-one million, three hundred nineteen thousand, one hundred five".