1313621002 has 8 divisors (see below), whose sum is σ = 1973970756. Its totient is φ = 655630752.

The previous prime is 1313620981. The next prime is 1313621003. The reversal of 1313621002 is 2001263131.

It can be written as a sum of positive squares in 2 ways, for example, as 992817081 + 320803921 = 31509^2 + 17911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1313621003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588483 + ... + 590710.

Almost surely, 2^1313621002 is an apocalyptic number.

1313621002 is a deficient number, since it is larger than the sum of its proper divisors (660349754).

1313621002 is a wasteful number, since it uses less digits than its factorization.

1313621002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179752.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1313621002 is about 36243.9098608304. The cubic root of 1313621002 is about 1095.1914073633.

Adding to 1313621002 its reverse (2001263131), we get a palindrome (3314884133).

The spelling of 1313621002 in words is "one billion, three hundred thirteen million, six hundred twenty-one thousand, two".