1217317970 has 32 divisors (see below), whose sum is σ = 2417247360. Its totient is φ = 437683840.

The previous prime is 1217317967. The next prime is 1217317979. The reversal of 1217317970 is 797137121.

It is not an unprimeable number, because it can be changed into a prime (1217317979) 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 15 ways as a sum of consecutive naturals, for example, 52382 + ... + 71961.

It is an arithmetic number, because the mean of its divisors is an integer number (75538980).

Almost surely, 2^1217317970 is an apocalyptic number.

1217317970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1217317970 is a deficient number, since it is larger than the sum of its proper divisors (1199929390).

1217317970 is a wasteful number, since it uses less digits than its factorization.

1217317970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124450.

The product of its (nonzero) digits is 18522, while the sum is 38.

The square root of 1217317970 is about 34890.0841214234. The cubic root of 1217317970 is about 1067.7461423276.

The spelling of 1217317970 in words is "one billion, two hundred seventeen million, three hundred seventeen thousand, nine hundred seventy".