1310400002 has 4 divisors (see below), whose sum is σ = 1965600006. Its totient is φ = 655200000.

The previous prime is 1310399947. The next prime is 1310400011. The reversal of 1310400002 is 2000040131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 930189001 + 380211001 = 30499^2 + 19499^2 .

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 as a sum of consecutive naturals, namely, 327599999 + ... + 327600002.

Almost surely, 2^1310400002 is an apocalyptic number.

1310400002 is a deficient number, since it is larger than the sum of its proper divisors (655200004).

1310400002 is an equidigital number, since it uses as much as digits as its factorization.

1310400002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655200003.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1310400002 is about 36199.4475372208. The cubic root of 1310400002 is about 1094.2955379338.

Adding to 1310400002 its reverse (2000040131), we get a palindrome (3310440133).

The spelling of 1310400002 in words is "one billion, three hundred ten million, four hundred thousand, two".