1311433432 has 8 divisors (see below), whose sum is σ = 2458937700. Its totient is φ = 655716712.

The previous prime is 1311433429. The next prime is 1311433441. The reversal of 1311433432 is 2343341131.

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 = 1311433397 and 1311433406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81964582 + ... + 81964597.

Almost surely, 2^1311433432 is an apocalyptic number.

It is an amenable number.

1311433432 is a deficient number, since it is larger than the sum of its proper divisors (1147504268).

1311433432 is a wasteful number, since it uses less digits than its factorization.

1311433432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163929185 (or 163929181 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

The square root of 1311433432 is about 36213.7188369270. The cubic root of 1311433432 is about 1094.5831296824.

Adding to 1311433432 its reverse (2343341131), we get a palindrome (3654774563).

The spelling of 1311433432 in words is "one billion, three hundred eleven million, four hundred thirty-three thousand, four hundred thirty-two".