1316821330 has 32 divisors (see below), whose sum is σ = 2587878720. Its totient is φ = 478451520.

The previous prime is 1316821273. The next prime is 1316821333. The reversal of 1316821330 is 331286131.

It is not an unprimeable number, because it can be changed into a prime (1316821333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152776 + ... + 161164.

It is an arithmetic number, because the mean of its divisors is an integer number (80871210).

Almost surely, 2^1316821330 is an apocalyptic number.

1316821330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1316821330 is a deficient number, since it is larger than the sum of its proper divisors (1271057390).

1316821330 is a wasteful number, since it uses less digits than its factorization.

1316821330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9834.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1316821330 is about 36288.0328758669. The cubic root of 1316821330 is about 1096.0800779974.

The spelling of 1316821330 in words is "one billion, three hundred sixteen million, eight hundred twenty-one thousand, three hundred thirty".