1213320232 has 32 divisors (see below), whose sum is σ = 2302108200. Its totient is φ = 599445504.

The previous prime is 1213320193. The next prime is 1213320233. The reversal of 1213320232 is 2320233121.

It can be written as a sum of positive squares in 4 ways, for example, as 891261316 + 322058916 = 29854^2 + 17946^2 .

It is a super-3 number, since 3×1213320232³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213320233) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 940644 + ... + 941932.

Almost surely, 2^1213320232 is an apocalyptic number.

It is an amenable number.

1213320232 is a deficient number, since it is larger than the sum of its proper divisors (1088787968).

1213320232 is a wasteful number, since it uses less digits than its factorization.

1213320232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605 (or 2601 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1213320232 is about 34832.7465468918. The cubic root of 1213320232 is about 1066.5760151260.

Adding to 1213320232 its reverse (2320233121), we get a palindrome (3533553353).

The spelling of 1213320232 in words is "one billion, two hundred thirteen million, three hundred twenty thousand, two hundred thirty-two".