1316400305 has 16 divisors (see below), whose sum is σ = 1745107200. Its totient is φ = 945260160.

The previous prime is 1316400301. The next prime is 1316400307. The reversal of 1316400305 is 5030046131.

It is a happy number.

It is not a de Polignac number, because 1316400305 - 2² = 1316400301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1316400301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147140 + ... + 155829.

It is an arithmetic number, because the mean of its divisors is an integer number (109069200).

Almost surely, 2^1316400305 is an apocalyptic number.

It is an amenable number.

1316400305 is a deficient number, since it is larger than the sum of its proper divisors (428706895).

1316400305 is a wasteful number, since it uses less digits than its factorization.

1316400305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303064.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1316400305 is about 36282.2312571870. The cubic root of 1316400305 is about 1095.9632496180.

Adding to 1316400305 its reverse (5030046131), we get a palindrome (6346446436).

The spelling of 1316400305 in words is "one billion, three hundred sixteen million, four hundred thousand, three hundred five".