1320403144 has 32 divisors (see below), whose sum is σ = 2503800000. Its totient is φ = 652744512.

The previous prime is 1320403129. The next prime is 1320403153. The reversal of 1320403144 is 4413040231.

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, 880107 + ... + 881605.

It is an arithmetic number, because the mean of its divisors is an integer number (78243750).

Almost surely, 2^1320403144 is an apocalyptic number.

It is an amenable number.

1320403144 is a deficient number, since it is larger than the sum of its proper divisors (1183396856).

1320403144 is a wasteful number, since it uses less digits than its factorization.

1320403144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677 (or 2673 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1320403144 is about 36337.3519123229. The cubic root of 1320403144 is about 1097.0729742131.

Adding to 1320403144 its reverse (4413040231), we get a palindrome (5733443375).

The spelling of 1320403144 in words is "one billion, three hundred twenty million, four hundred three thousand, one hundred forty-four".