1213113232 has 10 divisors (see below), whose sum is σ = 2350406918. Its totient is φ = 606556608.

The previous prime is 1213113229. The next prime is 1213113233. The reversal of 1213113232 is 2323113121.

It can be written as a sum of positive squares in only one way, i.e., 1178960896 + 34152336 = 34336^2 + 5844^2 .

It is not an unprimeable number, because it can be changed into a prime (1213113233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37909773 + ... + 37909804.

Almost surely, 2^1213113232 is an apocalyptic number.

It is an amenable number.

1213113232 is a deficient number, since it is larger than the sum of its proper divisors (1137293686).

1213113232 is an equidigital number, since it uses as much as digits as its factorization.

1213113232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75819585 (or 75819579 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 1213113232 is about 34829.7750782287. The cubic root of 1213113232 is about 1066.5153568359.

Adding to 1213113232 its reverse (2323113121), we get a palindrome (3536226353).

The spelling of 1213113232 in words is "one billion, two hundred thirteen million, one hundred thirteen thousand, two hundred thirty-two".