1331316208 has 10 divisors (see below), whose sum is σ = 2579425184. Its totient is φ = 665658096.

The previous prime is 1331316191. The next prime is 1331316209. The reversal of 1331316208 is 8026131331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331316209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41603616 + ... + 41603647.

Almost surely, 2^1331316208 is an apocalyptic number.

It is an amenable number.

1331316208 is a deficient number, since it is larger than the sum of its proper divisors (1248108976).

1331316208 is an equidigital number, since it uses as much as digits as its factorization.

1331316208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83207271 (or 83207265 counting only the distinct ones).

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

The square root of 1331316208 is about 36487.2060865175. The cubic root of 1331316208 is about 1100.0871027445.

Adding to 1331316208 its reverse (8026131331), we get a palindrome (9357447539).

The spelling of 1331316208 in words is "one billion, three hundred thirty-one million, three hundred sixteen thousand, two hundred eight".