1231425444 has 24 divisors (see below), whose sum is σ = 2874481120. Its totient is φ = 410310144.

The previous prime is 1231425439. The next prime is 1231425467. The reversal of 1231425444 is 4445241321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12612 + ... + 51204.

Almost surely, 2^1231425444 is an apocalyptic number.

It is an amenable number.

1231425444 is an abundant number, since it is smaller than the sum of its proper divisors (1643055676).

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

1231425444 is a wasteful number, since it uses less digits than its factorization.

1231425444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41259 (or 41257 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 1231425444 is about 35091.6720034825. The cubic root of 1231425444 is about 1071.8550067970.

Adding to 1231425444 its reverse (4445241321), we get a palindrome (5676666765).

The spelling of 1231425444 in words is "one billion, two hundred thirty-one million, four hundred twenty-five thousand, four hundred forty-four".