1313531126 has 16 divisors (see below), whose sum is σ = 2000105520. Its totient is φ = 646894080.

The previous prime is 1313531119. The next prime is 1313531143. The reversal of 1313531126 is 6211353131.

It is a junction number, because it is equal to n+sod(n) for n = 1313531095 and 1313531104.

It is a congruent number.

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, 24890 + ... + 56978.

It is an arithmetic number, because the mean of its divisors is an integer number (125006595).

Almost surely, 2^1313531126 is an apocalyptic number.

1313531126 is a deficient number, since it is larger than the sum of its proper divisors (686574394).

1313531126 is a wasteful number, since it uses less digits than its factorization.

1313531126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32399.

The product of its digits is 1620, while the sum is 26.

The square root of 1313531126 is about 36242.6699623524. The cubic root of 1313531126 is about 1095.1664296699.

Adding to 1313531126 its reverse (6211353131), we get a palindrome (7524884257).

The spelling of 1313531126 in words is "one billion, three hundred thirteen million, five hundred thirty-one thousand, one hundred twenty-six".