170981123 has 2 divisors, whose sum is σ = 170981124. Its totient is φ = 170981122.

The previous prime is 170981117. The next prime is 170981131. The reversal of 170981123 is 321189071.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 170981123 - 2⁶ = 170981059 is a prime.

It is a super-2 number, since 2×170981123² = 58469088844682258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 170981123.

It is not a weakly prime, because it can be changed into another prime (170981623) 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, 85490561 + 85490562.

It is an arithmetic number, because the mean of its divisors is an integer number (85490562).

Almost surely, 2^170981123 is an apocalyptic number.

170981123 is a deficient number, since it is larger than the sum of its proper divisors (1).

170981123 is an equidigital number, since it uses as much as digits as its factorization.

170981123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 170981123 is about 13075.9750305666. The cubic root of 170981123 is about 555.0294852176.

The spelling of 170981123 in words is "one hundred seventy million, nine hundred eighty-one thousand, one hundred twenty-three".