1311480028 has 12 divisors (see below), whose sum is σ = 2430095472. Its totient is φ = 617167040.

The previous prime is 1311480019. The next prime is 1311480031. The reversal of 1311480028 is 8200841131.

It is a junction number, because it is equal to n+sod(n) for n = 1311479978 and 1311480005.

It is a congruent number.

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, 9643168 + ... + 9643303.

It is an arithmetic number, because the mean of its divisors is an integer number (202507956).

Almost surely, 2^1311480028 is an apocalyptic number.

It is an amenable number.

1311480028 is a deficient number, since it is larger than the sum of its proper divisors (1118615444).

1311480028 is a wasteful number, since it uses less digits than its factorization.

1311480028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19286492 (or 19286490 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1311480028 is about 36214.3621785611. The cubic root of 1311480028 is about 1094.5960932560.

The spelling of 1311480028 in words is "one billion, three hundred eleven million, four hundred eighty thousand, twenty-eight".