1320215144 has 16 divisors (see below), whose sum is σ = 2476202820. Its totient is φ = 659894400.

The previous prime is 1320215119. The next prime is 1320215177. The reversal of 1320215144 is 4415120231.

It can be written as a sum of positive squares in 2 ways, for example, as 1313192644 + 7022500 = 36238^2 + 2650^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1412 + ... + 51404.

Almost surely, 2^1320215144 is an apocalyptic number.

It is an amenable number.

1320215144 is a deficient number, since it is larger than the sum of its proper divisors (1155987676).

1320215144 is a wasteful number, since it uses less digits than its factorization.

1320215144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53300 (or 53296 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1320215144 is about 36334.7649503888. The cubic root of 1320215144 is about 1097.0209043813.

Adding to 1320215144 its reverse (4415120231), we get a palindrome (5735335375).

The spelling of 1320215144 in words is "one billion, three hundred twenty million, two hundred fifteen thousand, one hundred forty-four".