1231444132 has 6 divisors (see below), whose sum is σ = 2155027238. Its totient is φ = 615722064.

The previous prime is 1231444117. The next prime is 1231444141. The reversal of 1231444132 is 2314441321.

It can be written as a sum of positive squares in only one way, i.e., 901440576 + 330003556 = 30024^2 + 18166^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1231444097 and 1231444106.

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 as a sum of consecutive naturals, namely, 153930513 + ... + 153930520.

Almost surely, 2^1231444132 is an apocalyptic number.

It is an amenable number.

1231444132 is a deficient number, since it is larger than the sum of its proper divisors (923583106).

1231444132 is a wasteful number, since it uses less digits than its factorization.

1231444132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307861037 (or 307861035 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 1231444132 is about 35091.9382764760. The cubic root of 1231444132 is about 1071.8604288941.

Adding to 1231444132 its reverse (2314441321), we get a palindrome (3545885453).

The spelling of 1231444132 in words is "one billion, two hundred thirty-one million, four hundred forty-four thousand, one hundred thirty-two".