981371023 has 2 divisors, whose sum is σ = 981371024. Its totient is φ = 981371022.

The previous prime is 981371021. The next prime is 981371057. The reversal of 981371023 is 320173189.

It is an a-pointer prime, because the next prime (981371057) can be obtained adding 981371023 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 981371023 - 2¹ = 981371021 is a prime.

Together with 981371021, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 981371023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981371021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490685511 + 490685512.

It is an arithmetic number, because the mean of its divisors is an integer number (490685512).

Almost surely, 2^981371023 is an apocalyptic number.

981371023 is a deficient number, since it is larger than the sum of its proper divisors (1).

981371023 is an equidigital number, since it uses as much as digits as its factorization.

981371023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 981371023 is about 31326.8418931753. The cubic root of 981371023 is about 993.7513770375.

The spelling of 981371023 in words is "nine hundred eighty-one million, three hundred seventy-one thousand, twenty-three".