1217315480 has 32 divisors (see below), whose sum is σ = 2858047200. Its totient is φ = 465755136.

The previous prime is 1217315467. The next prime is 1217315483. The reversal of 1217315480 is 845137121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217315483) 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, 660665 + ... + 662504.

It is an arithmetic number, because the mean of its divisors is an integer number (89313975).

Almost surely, 2^1217315480 is an apocalyptic number.

1217315480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1217315480 is an abundant number, since it is smaller than the sum of its proper divisors (1640731720).

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

1217315480 is a wasteful number, since it uses less digits than its factorization.

1217315480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323203 (or 1323199 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1217315480 is about 34890.0484379142. The cubic root of 1217315480 is about 1067.7454143091.

The spelling of 1217315480 in words is "one billion, two hundred seventeen million, three hundred fifteen thousand, four hundred eighty".