1312013002 has 4 divisors (see below), whose sum is σ = 1968019506. Its totient is φ = 656006500.

The previous prime is 1312012987. The next prime is 1312013051. The reversal of 1312013002 is 2003102131.

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., 910772041 + 401240961 = 30179^2 + 20031^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 328003249 + ... + 328003252.

Almost surely, 2^1312013002 is an apocalyptic number.

1312013002 is a deficient number, since it is larger than the sum of its proper divisors (656006504).

1312013002 is an equidigital number, since it uses as much as digits as its factorization.

1312013002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656006503.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1312013002 is about 36221.7200309428. The cubic root of 1312013002 is about 1094.7443512636.

Adding to 1312013002 its reverse (2003102131), we get a palindrome (3315115133).

The spelling of 1312013002 in words is "one billion, three hundred twelve million, thirteen thousand, two".