1217016423 has 24 divisors (see below), whose sum is σ = 2043100800. Its totient is φ = 683648784.

The previous prime is 1217016413. The next prime is 1217016439. The reversal of 1217016423 is 3246107121.

1217016423 is a `hidden beast` number, since 1 + 2 + 17 + 0 + 1 + 642 + 3 = 666.

It is not a de Polignac number, because 1217016423 - 2⁵ = 1217016391 is a prime.

It is a super-2 number, since 2×1217016423² = 2962257947703429858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217016403) 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 in 23 ways as a sum of consecutive naturals, for example, 159993 + ... + 167426.

It is an arithmetic number, because the mean of its divisors is an integer number (85129200).

Almost surely, 2^1217016423 is an apocalyptic number.

1217016423 is a deficient number, since it is larger than the sum of its proper divisors (826084377).

1217016423 is a wasteful number, since it uses less digits than its factorization.

1217016423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327491 (or 327488 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1217016423 is about 34885.7624683767. The cubic root of 1217016423 is about 1067.6579697373.

The spelling of 1217016423 in words is "one billion, two hundred seventeen million, sixteen thousand, four hundred twenty-three".