1311504705 has 48 divisors (see below), whose sum is σ = 2615558400. Its totient is φ = 595499904.

The previous prime is 1311504653. The next prime is 1311504707. The reversal of 1311504705 is 5074051131.

1311504705 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1311504705 - 2⁹ = 1311504193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311504707) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32964 + ... + 60906.

It is an arithmetic number, because the mean of its divisors is an integer number (54490800).

Almost surely, 2^1311504705 is an apocalyptic number.

1311504705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311504705 is a deficient number, since it is larger than the sum of its proper divisors (1304053695).

1311504705 is a wasteful number, since it uses less digits than its factorization.

1311504705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28110 (or 28107 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 1311504705 is about 36214.7028843259. The cubic root of 1311504705 is about 1094.6029585730.

Adding to 1311504705 its reverse (5074051131), we get a palindrome (6385555836).

The spelling of 1311504705 in words is "one billion, three hundred eleven million, five hundred four thousand, seven hundred five".