1316432887 has 32 divisors (see below), whose sum is σ = 1722175488. Its totient is φ = 976320000.

The previous prime is 1316432869. The next prime is 1316432903. The reversal of 1316432887 is 7882346131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1316432887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316432837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141087 + ... + 150127.

It is an arithmetic number, because the mean of its divisors is an integer number (53817984).

Almost surely, 2^1316432887 is an apocalyptic number.

1316432887 is a deficient number, since it is larger than the sum of its proper divisors (405742601).

1316432887 is a wasteful number, since it uses less digits than its factorization.

1316432887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9151.

The product of its digits is 193536, while the sum is 43.

The square root of 1316432887 is about 36282.6802620755. The cubic root of 1316432887 is about 1095.9722915434.

The spelling of 1316432887 in words is "one billion, three hundred sixteen million, four hundred thirty-two thousand, eight hundred eighty-seven".