1316243836 has 24 divisors (see below), whose sum is σ = 2490820416. Its totient is φ = 606228480.

The previous prime is 1316243833. The next prime is 1316243857. The reversal of 1316243836 is 6383426131.

It is a junction number, because it is equal to n+sod(n) for n = 1316243795 and 1316243804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316243833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202725 + ... + 209116.

It is an arithmetic number, because the mean of its divisors is an integer number (103784184).

Almost surely, 2^1316243836 is an apocalyptic number.

It is an amenable number.

1316243836 is a deficient number, since it is larger than the sum of its proper divisors (1174576580).

1316243836 is a wasteful number, since it uses less digits than its factorization.

1316243836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411909 (or 411907 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 1316243836 is about 36280.0749172325. The cubic root of 1316243836 is about 1095.9198253729.

Adding to 1316243836 its reverse (6383426131), we get a palindrome (7699669967).

It can be divided in two parts, 131624 and 3836, that added together give a triangular number (135460 = T₅₂₀).

The spelling of 1316243836 in words is "one billion, three hundred sixteen million, two hundred forty-three thousand, eight hundred thirty-six".