1243131422 has 8 divisors (see below), whose sum is σ = 2008135416. Its totient is φ = 573752952.

The previous prime is 1243131401. The next prime is 1243131427. The reversal of 1243131422 is 2241313421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243131427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23906348 + ... + 23906399.

It is an arithmetic number, because the mean of its divisors is an integer number (251016927).

Almost surely, 2^1243131422 is an apocalyptic number.

1243131422 is a deficient number, since it is larger than the sum of its proper divisors (765003994).

1243131422 is a wasteful number, since it uses less digits than its factorization.

1243131422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47812762.

The product of its digits is 1152, while the sum is 23.

The square root of 1243131422 is about 35258.0688920990. The cubic root of 1243131422 is about 1075.2406663618.

Adding to 1243131422 its reverse (2241313421), we get a palindrome (3484444843).

The spelling of 1243131422 in words is "one billion, two hundred forty-three million, one hundred thirty-one thousand, four hundred twenty-two".