1217238532 has 12 divisors (see below), whose sum is σ = 2131926300. Its totient is φ = 608116736.

The previous prime is 1217238511. The next prime is 1217238541. The reversal of 1217238532 is 2358327121.

It can be written as a sum of positive squares in 2 ways, for example, as 947162176 + 270076356 = 30776^2 + 16434^2 .

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, 120157 + ... + 129892.

It is an arithmetic number, because the mean of its divisors is an integer number (177660525).

Almost surely, 2^1217238532 is an apocalyptic number.

It is an amenable number.

1217238532 is a deficient number, since it is larger than the sum of its proper divisors (914687768).

1217238532 is a wasteful number, since it uses less digits than its factorization.

1217238532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251270 (or 251268 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 1217238532 is about 34888.9456991753. The cubic root of 1217238532 is about 1067.7229160040.

It can be divided in two parts, 1217 and 238532, that multiplied together give a square (290293444 = 17038²).

The spelling of 1217238532 in words is "one billion, two hundred seventeen million, two hundred thirty-eight thousand, five hundred thirty-two".