1312001002 has 16 divisors (see below), whose sum is σ = 2122364160. Its totient is φ = 604688112.

The previous prime is 1312000999. The next prime is 1312001021. The reversal of 1312001002 is 2001002131.

It is a self number, because there is not a number n which added to its sum of digits gives 1312001002.

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 in 7 ways as a sum of consecutive naturals, for example, 16398 + ... + 53785.

It is an arithmetic number, because the mean of its divisors is an integer number (132647760).

Almost surely, 2^1312001002 is an apocalyptic number.

1312001002 is a deficient number, since it is larger than the sum of its proper divisors (810363158).

1312001002 is a wasteful number, since it uses less digits than its factorization.

1312001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70917.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1312001002 is about 36221.5543840957. The cubic root of 1312001002 is about 1094.7410136512.

Adding to 1312001002 its reverse (2001002131), we get a palindrome (3313003133).

It can be divided in two parts, 131 and 2001002, that multiplied together give a palindrome (262131262).

The spelling of 1312001002 in words is "one billion, three hundred twelve million, one thousand, two".