1312131602 has 16 divisors (see below), whose sum is σ = 2092305600. Its totient is φ = 615380400.

The previous prime is 1312131589. The next prime is 1312131607. The reversal of 1312131602 is 2061312131.

It is not an unprimeable number, because it can be changed into a prime (1312131607) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 167102 + ... + 174777.

It is an arithmetic number, because the mean of its divisors is an integer number (130769100).

Almost surely, 2^1312131602 is an apocalyptic number.

1312131602 is a deficient number, since it is larger than the sum of its proper divisors (780173998).

1312131602 is a wasteful number, since it uses less digits than its factorization.

1312131602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342001.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1312131602 is about 36223.3571332090. The cubic root of 1312131602 is about 1094.7773369042. Note that the first 3 decimals are identical.

Adding to 1312131602 its reverse (2061312131), we get a palindrome (3373443733).

The spelling of 1312131602 in words is "one billion, three hundred twelve million, one hundred thirty-one thousand, six hundred two".