1312403432 has 16 divisors (see below), whose sum is σ = 2461838400. Its totient is φ = 655913200.

The previous prime is 1312403429. The next prime is 1312403441. The reversal of 1312403432 is 2343042131.

It is a junction number, because it is equal to n+sod(n) for n = 1312403398 and 1312403407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16082 + ... + 53697.

It is an arithmetic number, because the mean of its divisors is an integer number (153864900).

Almost surely, 2^1312403432 is an apocalyptic number.

It is an amenable number.

1312403432 is a deficient number, since it is larger than the sum of its proper divisors (1149434968).

1312403432 is a wasteful number, since it uses less digits than its factorization.

1312403432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72136 (or 72132 counting only the distinct ones).

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

The square root of 1312403432 is about 36227.1090759393. The cubic root of 1312403432 is about 1094.8529321607.

Adding to 1312403432 its reverse (2343042131), we get a palindrome (3655445563).

The spelling of 1312403432 in words is "one billion, three hundred twelve million, four hundred three thousand, four hundred thirty-two".