1213123232 has 12 divisors (see below), whose sum is σ = 2388336426. Its totient is φ = 606561600.

The previous prime is 1213123207. The next prime is 1213123259. The reversal of 1213123232 is 2323213121.

It can be written as a sum of positive squares in only one way, i.e., 958273936 + 254849296 = 30956^2 + 15964^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18955019 + ... + 18955082.

Almost surely, 2^1213123232 is an apocalyptic number.

It is an amenable number.

1213123232 is a deficient number, since it is larger than the sum of its proper divisors (1175213194).

1213123232 is an equidigital number, since it uses as much as digits as its factorization.

1213123232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37910111 (or 37910103 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 1213123232 is about 34829.9186332670. The cubic root of 1213123232 is about 1066.5182873467.

Adding to 1213123232 its reverse (2323213121), we get a palindrome (3536336353).

The spelling of 1213123232 in words is "one billion, two hundred thirteen million, one hundred twenty-three thousand, two hundred thirty-two".