1243131234 has 16 divisors (see below), whose sum is σ = 2546903520. Its totient is φ = 404270240.

The previous prime is 1243131203. The next prime is 1243131257. The reversal of 1243131234 is 4321313421.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 2526444 + ... + 2526935.

It is an arithmetic number, because the mean of its divisors is an integer number (159181470).

Almost surely, 2^1243131234 is an apocalyptic number.

1243131234 is an abundant number, since it is smaller than the sum of its proper divisors (1303772286).

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

1243131234 is a wasteful number, since it uses less digits than its factorization.

1243131234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053425.

The product of its digits is 1728, while the sum is 24.

The square root of 1243131234 is about 35258.0662260425. The cubic root of 1243131234 is about 1075.2406121586.

Adding to 1243131234 its reverse (4321313421), we get a palindrome (5564444655).

The spelling of 1243131234 in words is "one billion, two hundred forty-three million, one hundred thirty-one thousand, two hundred thirty-four".