1331812036 has 27 divisors (see below), whose sum is σ = 2373193837. Its totient is φ = 653972480.

The previous prime is 1331811991. The next prime is 1331812063. The reversal of 1331812036 is 6302181331.

The square root of 1331812036 is 36494.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1311164100 + 20647936 = 36210^2 + 4544^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331811995 and 1331812013.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5182020 + ... + 5182276.

Almost surely, 2^1331812036 is an apocalyptic number.

1331812036 is the 36494-th square number.

It is an amenable number.

1331812036 is a deficient number, since it is larger than the sum of its proper divisors (1041381801).

1331812036 is an frugal number, since it uses more digits than its factorization.

1331812036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The cubic root of 1331812036 is about 1100.2236558998.

Adding to 1331812036 its reverse (6302181331), we get a palindrome (7633993367).

The spelling of 1331812036 in words is "one billion, three hundred thirty-one million, eight hundred twelve thousand, thirty-six".