1231432232 has 8 divisors (see below), whose sum is σ = 2308935450. Its totient is φ = 615716112.

The previous prime is 1231432231. The next prime is 1231432273. The reversal of 1231432232 is 2322341321.

It can be written as a sum of positive squares in only one way, i.e., 991368196 + 240064036 = 31486^2 + 15494^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1231432198 and 1231432207.

It is not an unprimeable number, because it can be changed into a prime (1231432231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76964507 + ... + 76964522.

Almost surely, 2^1231432232 is an apocalyptic number.

It is an amenable number.

1231432232 is a deficient number, since it is larger than the sum of its proper divisors (1077503218).

1231432232 is a wasteful number, since it uses less digits than its factorization.

1231432232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153929035 (or 153929031 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 1231432232 is about 35091.7687214538. The cubic root of 1231432232 is about 1071.8569762594.

Adding to 1231432232 its reverse (2322341321), we get a palindrome (3553773553).

The spelling of 1231432232 in words is "one billion, two hundred thirty-one million, four hundred thirty-two thousand, two hundred thirty-two".