1311620512 has 12 divisors (see below), whose sum is σ = 2582252946. Its totient is φ = 655810240.

The previous prime is 1311620491. The next prime is 1311620543. The reversal of 1311620512 is 2150261131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1205200656 + 106419856 = 34716^2 + 10316^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20494039 + ... + 20494102.

Almost surely, 2^1311620512 is an apocalyptic number.

It is an amenable number.

1311620512 is a deficient number, since it is larger than the sum of its proper divisors (1270632434).

1311620512 is an equidigital number, since it uses as much as digits as its factorization.

1311620512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40988151 (or 40988143 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1311620512 is about 36216.3017438280. The cubic root of 1311620512 is about 1094.6351757541.

Adding to 1311620512 its reverse (2150261131), we get a palindrome (3461881643).

The spelling of 1311620512 in words is "one billion, three hundred eleven million, six hundred twenty thousand, five hundred twelve".