1312432444 has 24 divisors (see below), whose sum is σ = 2333052288. Its totient is φ = 645877680.

The previous prime is 1312432409. The next prime is 1312432447. The reversal of 1312432444 is 4442342131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312432447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179019 + ... + 186205.

It is an arithmetic number, because the mean of its divisors is an integer number (97210512).

Almost surely, 2^1312432444 is an apocalyptic number.

It is an amenable number.

1312432444 is a deficient number, since it is larger than the sum of its proper divisors (1020619844).

1312432444 is a wasteful number, since it uses less digits than its factorization.

1312432444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7905 (or 7903 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

The square root of 1312432444 is about 36227.5094920973. The cubic root of 1312432444 is about 1094.8609997103.

Adding to 1312432444 its reverse (4442342131), we get a palindrome (5754774575).

The spelling of 1312432444 in words is "one billion, three hundred twelve million, four hundred thirty-two thousand, four hundred forty-four".