1312002 has 12 divisors (see below), whose sum is σ = 2842710. Its totient is φ = 437328.

The previous prime is 1312001. The next prime is 1312019. The reversal of 1312002 is 2002131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 848241 + 463761 = 921^2 + 681^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1312001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36427 + ... + 36462.

2^1312002 is an apocalyptic number.

1312002 is an abundant number, since it is smaller than the sum of its proper divisors (1530708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312002 is a wasteful number, since it uses less digits than its factorization.

1312002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72897 (or 72894 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1312002 is about 1145.4265580996. The cubic root of 1312002 is about 109.4741291230.

Adding to 1312002 its reverse (2002131), we get a palindrome (3314133).

It can be divided in two parts, 131 and 2002, that multiplied together give a palindrome (262262).

The spelling of 1312002 in words is "one million, three hundred twelve thousand, two".