1311457432 has 8 divisors (see below), whose sum is σ = 2458982700. Its totient is φ = 655728712.

The previous prime is 1311457429. The next prime is 1311457451. The reversal of 1311457432 is 2347541131.

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 = 1311457394 and 1311457403.

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, 81966082 + ... + 81966097.

Almost surely, 2^1311457432 is an apocalyptic number.

It is an amenable number.

1311457432 is a deficient number, since it is larger than the sum of its proper divisors (1147525268).

1311457432 is a wasteful number, since it uses less digits than its factorization.

1311457432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163932185 (or 163932181 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 1311457432 is about 36214.0502015447. The cubic root of 1311457432 is about 1094.5898068125.

Adding to 1311457432 its reverse (2347541131), we get a palindrome (3658998563).

The spelling of 1311457432 in words is "one billion, three hundred eleven million, four hundred fifty-seven thousand, four hundred thirty-two".