1320023012 has 96 divisors (see below), whose sum is σ = 2987421696. Its totient is φ = 495475200.

The previous prime is 1320023009. The next prime is 1320023039. The reversal of 1320023012 is 2103200231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 969212 + ... + 970572.

It is an arithmetic number, because the mean of its divisors is an integer number (31118976).

Almost surely, 2^1320023012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320023012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1493710848).

1320023012 is an abundant number, since it is smaller than the sum of its proper divisors (1667398684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320023012 is a wasteful number, since it uses less digits than its factorization.

1320023012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497 (or 1495 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1320023012 is about 36332.1209400167. The cubic root of 1320023012 is about 1096.9676850135.

Adding to 1320023012 its reverse (2103200231), we get a palindrome (3423223243).

The spelling of 1320023012 in words is "one billion, three hundred twenty million, twenty-three thousand, twelve".