1312512002 has 4 divisors (see below), whose sum is σ = 1968768006. Its totient is φ = 656256000.

The previous prime is 1312511939. The next prime is 1312512011. The reversal of 1312512002 is 2002152131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2002152131 = 7 ⋅286021733.

It can be written as a sum of positive squares in only one way, i.e., 1131044161 + 181467841 = 33631^2 + 13471^2 .

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, 328127999 + ... + 328128002.

Almost surely, 2^1312512002 is an apocalyptic number.

1312512002 is a deficient number, since it is larger than the sum of its proper divisors (656256004).

1312512002 is an equidigital number, since it uses as much as digits as its factorization.

1312512002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656256003.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1312512002 is about 36228.6075084318. The cubic root of 1312512002 is about 1094.8831222944.

Adding to 1312512002 its reverse (2002152131), we get a palindrome (3314664133).

The spelling of 1312512002 in words is "one billion, three hundred twelve million, five hundred twelve thousand, two".