1213440232 has 16 divisors (see below), whose sum is σ = 2279152260. Its totient is φ = 605666304.

The previous prime is 1213440227. The next prime is 1213440257. The reversal of 1213440232 is 2320443121.

It can be written as a sum of positive squares in 2 ways, for example, as 1212014596 + 1425636 = 34814^2 + 1194^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126823 + ... + 136054.

Almost surely, 2^1213440232 is an apocalyptic number.

It is an amenable number.

1213440232 is a deficient number, since it is larger than the sum of its proper divisors (1065712028).

1213440232 is a wasteful number, since it uses less digits than its factorization.

1213440232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263460 (or 263456 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1213440232 is about 34834.4690213587. The cubic root of 1213440232 is about 1066.6111761932.

Adding to 1213440232 its reverse (2320443121), we get a palindrome (3533883353).

The spelling of 1213440232 in words is "one billion, two hundred thirteen million, four hundred forty thousand, two hundred thirty-two".