981319 has 2 divisors, whose sum is σ = 981320. Its totient is φ = 981318.

The previous prime is 981311. The next prime is 981373. The reversal of 981319 is 913189.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 981319 - 2³ = 981311 is a prime.

It is a super-2 number, since 2×981319² = 1925973959522, which contains 22 as substring.

981319 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490659 + 490660.

It is an arithmetic number, because the mean of its divisors is an integer number (490660).

2⁹⁸¹³¹⁹ is an apocalyptic number.

981319 is a deficient number, since it is larger than the sum of its proper divisors (1).

981319 is an equidigital number, since it uses as much as digits as its factorization.

981319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 31.

The square root of 981319 is about 990.6154652538. The cubic root of 981319 is about 99.3733816964.

The spelling of 981319 in words is "nine hundred eighty-one thousand, three hundred nineteen".