1217223287 has 8 divisors (see below), whose sum is σ = 1391940000. Its totient is φ = 1042713504.

The previous prime is 1217223283. The next prime is 1217223289. The reversal of 1217223287 is 7823227121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1217223287 - 2² = 1217223283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217223283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38912 + ... + 62837.

It is an arithmetic number, because the mean of its divisors is an integer number (173992500).

Almost surely, 2^1217223287 is an apocalyptic number.

1217223287 is a deficient number, since it is larger than the sum of its proper divisors (174716713).

1217223287 is a wasteful number, since it uses less digits than its factorization.

1217223287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103465.

The product of its digits is 18816, while the sum is 35.

The square root of 1217223287 is about 34888.7272195476. The cubic root of 1217223287 is about 1067.7184585091.

The spelling of 1217223287 in words is "one billion, two hundred seventeen million, two hundred twenty-three thousand, two hundred eighty-seven".