1231144444 has 12 divisors (see below), whose sum is σ = 2267897800. Its totient is φ = 583173648.

The previous prime is 1231144441. The next prime is 1231144487. The reversal of 1231144444 is 4444411321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231144441) 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, 8099559 + ... + 8099710.

Almost surely, 2^1231144444 is an apocalyptic number.

It is an amenable number.

1231144444 is a deficient number, since it is larger than the sum of its proper divisors (1036753356).

1231144444 is a wasteful number, since it uses less digits than its factorization.

1231144444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16199292 (or 16199290 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

The square root of 1231144444 is about 35087.6679760853. The cubic root of 1231144444 is about 1071.7734714319.

Adding to 1231144444 its reverse (4444411321), we get a palindrome (5675555765).

The spelling of 1231144444 in words is "one billion, two hundred thirty-one million, one hundred forty-four thousand, four hundred forty-four".