1217471320 has 64 divisors (see below), whose sum is σ = 3123580320. Its totient is φ = 423081984.

The previous prime is 1217471309. The next prime is 1217471327. The reversal of 1217471320 is 231747121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217471327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60022 + ... + 77701.

Almost surely, 2^1217471320 is an apocalyptic number.

1217471320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1217471320 is an abundant number, since it is smaller than the sum of its proper divisors (1906109000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1217471320 is a wasteful number, since it uses less digits than its factorization.

1217471320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137764 (or 137760 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1217471320 is about 34892.2816680136. The cubic root of 1217471320 is about 1067.7909764081.

The spelling of 1217471320 in words is "one billion, two hundred seventeen million, four hundred seventy-one thousand, three hundred twenty".