1213430432 has 12 divisors (see below), whose sum is σ = 2388941226. Its totient is φ = 606715200.

The previous prime is 1213430431. The next prime is 1213430447. The reversal of 1213430432 is 2340343121.

1213430432 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in only one way, i.e., 1003875856 + 209554576 = 31684^2 + 14476^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1213430398 and 1213430407.

It is not an unprimeable number, because it can be changed into a prime (1213430431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18959819 + ... + 18959882.

Almost surely, 2^1213430432 is an apocalyptic number.

It is an amenable number.

1213430432 is a deficient number, since it is larger than the sum of its proper divisors (1175510794).

1213430432 is an equidigital number, since it uses as much as digits as its factorization.

1213430432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37919711 (or 37919703 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1213430432 is about 34834.3283558044. The cubic root of 1213430432 is about 1066.6083047929.

Adding to 1213430432 its reverse (2340343121), we get a palindrome (3553773553).

The spelling of 1213430432 in words is "one billion, two hundred thirteen million, four hundred thirty thousand, four hundred thirty-two".