1316431556 has 12 divisors (see below), whose sum is σ = 2513187600. Its totient is φ = 598377960.

The previous prime is 1316431537. The next prime is 1316431561. The reversal of 1316431556 is 6551346131.

It is a super-2 number, since 2×1316431556² = 3465984083265162272, which contains 22 as substring.

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, 14959406 + ... + 14959493.

It is an arithmetic number, because the mean of its divisors is an integer number (209432300).

Almost surely, 2^1316431556 is an apocalyptic number.

It is an amenable number.

1316431556 is a deficient number, since it is larger than the sum of its proper divisors (1196756044).

1316431556 is a wasteful number, since it uses less digits than its factorization.

1316431556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29918914 (or 29918912 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The square root of 1316431556 is about 36282.6619199860. The cubic root of 1316431556 is about 1095.9719221766.

Adding to 1316431556 its reverse (6551346131), we get a palindrome (7867777687).

The spelling of 1316431556 in words is "one billion, three hundred sixteen million, four hundred thirty-one thousand, five hundred fifty-six".