1311398210 has 8 divisors (see below), whose sum is σ = 2360516796. Its totient is φ = 524559280.

The previous prime is 1311398201. The next prime is 1311398261. The reversal of 1311398210 is 128931131.

It can be written as a sum of positive squares in 2 ways, for example, as 1300395721 + 11002489 = 36061^2 + 3317^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65569901 + ... + 65569920.

Almost surely, 2^1311398210 is an apocalyptic number.

1311398210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311398210 is a deficient number, since it is larger than the sum of its proper divisors (1049118586).

1311398210 is a wasteful number, since it uses less digits than its factorization.

1311398210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131139828.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1311398210 is about 36213.2325262465. The cubic root of 1311398210 is about 1094.5733302901.

The spelling of 1311398210 in words is "one billion, three hundred eleven million, three hundred ninety-eight thousand, two hundred ten".