1243231434 has 24 divisors (see below), whose sum is σ = 2713335300. Its totient is φ = 411384768.

The previous prime is 1243231411. The next prime is 1243231447. The reversal of 1243231434 is 4341323421.

It can be written as a sum of positive squares in 2 ways, for example, as 1030217409 + 213014025 = 32097^2 + 14595^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1243231398 and 1243231407.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 249609 + ... + 254540.

Almost surely, 2^1243231434 is an apocalyptic number.

1243231434 is an abundant number, since it is smaller than the sum of its proper divisors (1470103866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243231434 is a wasteful number, since it uses less digits than its factorization.

1243231434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504294 (or 504291 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 1243231434 is about 35259.4871488512. The cubic root of 1243231434 is about 1075.2695005580.

Adding to 1243231434 its reverse (4341323421), we get a palindrome (5584554855).

The spelling of 1243231434 in words is "one billion, two hundred forty-three million, two hundred thirty-one thousand, four hundred thirty-four".