1320137012 has 24 divisors (see below), whose sum is σ = 2328214056. Its totient is φ = 654945408.

The previous prime is 1320136999. The next prime is 1320137017. The reversal of 1320137012 is 2107310231.

It can be written as a sum of positive squares in 4 ways, for example, as 1430416 + 1318706596 = 1196^2 + 36314^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320137017) by changing a digit.

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, 760898 + ... + 762630.

It is an arithmetic number, because the mean of its divisors is an integer number (97008919).

Almost surely, 2^1320137012 is an apocalyptic number.

It is an amenable number.

1320137012 is a deficient number, since it is larger than the sum of its proper divisors (1008077044).

1320137012 is a wasteful number, since it uses less digits than its factorization.

1320137012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107 (or 3105 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1320137012 is about 36333.6897658358. The cubic root of 1320137012 is about 1096.9992629267. Note that the first 3 decimals are identical.

Adding to 1320137012 its reverse (2107310231), we get a palindrome (3427447243).

The spelling of 1320137012 in words is "one billion, three hundred twenty million, one hundred thirty-seven thousand, twelve".