1217531332 has 12 divisors (see below), whose sum is σ = 2138972220. Its totient is φ = 606396416.

The previous prime is 1217531323. The next prime is 1217531351. The reversal of 1217531332 is 2331357121.

It can be written as a sum of positive squares in 2 ways, for example, as 1208674756 + 8856576 = 34766^2 + 2976^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1217531332.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 591157 + ... + 593212.

It is an arithmetic number, because the mean of its divisors is an integer number (178247685).

Almost surely, 2^1217531332 is an apocalyptic number.

It is an amenable number.

1217531332 is a deficient number, since it is larger than the sum of its proper divisors (921440888).

1217531332 is a wasteful number, since it uses less digits than its factorization.

1217531332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184630 (or 1184628 counting only the distinct ones).

The product of its digits is 3780, while the sum is 28.

The square root of 1217531332 is about 34893.1416183754. The cubic root of 1217531332 is about 1067.8085207555.

Adding to 1217531332 its reverse (2331357121), we get a palindrome (3548888453).

The spelling of 1217531332 in words is "one billion, two hundred seventeen million, five hundred thirty-one thousand, three hundred thirty-two".