1331273836 has 24 divisors (see below), whose sum is σ = 2466072000. Its totient is φ = 627074064.

The previous prime is 1331273809. The next prime is 1331273861. The reversal of 1331273836 is 6383721331.

It is a junction number, because it is equal to n+sod(n) for n = 1331273795 and 1331273804.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35326 + ... + 62533.

It is an arithmetic number, because the mean of its divisors is an integer number (102753000).

Almost surely, 2^1331273836 is an apocalyptic number.

It is an amenable number.

1331273836 is a deficient number, since it is larger than the sum of its proper divisors (1134798164).

1331273836 is a wasteful number, since it uses less digits than its factorization.

1331273836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98061 (or 98059 counting only the distinct ones).

The product of its digits is 54432, while the sum is 37.

The square root of 1331273836 is about 36486.6254400157. The cubic root of 1331273836 is about 1100.0754317418.

The spelling of 1331273836 in words is "one billion, three hundred thirty-one million, two hundred seventy-three thousand, eight hundred thirty-six".