1217031480 has 384 divisors, whose sum is σ = 4847431680. Its totient is φ = 268738560.

The previous prime is 1217031469. The next prime is 1217031493. The reversal of 1217031480 is 841307121.

1217031480 is a `hidden beast` number, since 12 + 170 + 3 + 1 + 480 = 666.

It is a super-3 number, since 3×1217031480³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 2108952 + ... + 2109528.

It is an arithmetic number, because the mean of its divisors is an integer number (12623520).

Almost surely, 2^1217031480 is an apocalyptic number.

1217031480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1217031480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2423715840).

1217031480 is an abundant number, since it is smaller than the sum of its proper divisors (3630400200).

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

1217031480 is a wasteful number, since it uses less digits than its factorization.

1217031480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1217031480 is about 34885.9782720795. The cubic root of 1217031480 is about 1067.6623727619.

The spelling of 1217031480 in words is "one billion, two hundred seventeen million, thirty-one thousand, four hundred eighty".