1310120305 has 32 divisors (see below), whose sum is σ = 1725058944. Its totient is φ = 949380096.

The previous prime is 1310120299. The next prime is 1310120321. The reversal of 1310120305 is 5030210131.

It is a cyclic number.

It is not a de Polignac number, because 1310120305 - 2³ = 1310120297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 785082 + ... + 786748.

It is an arithmetic number, because the mean of its divisors is an integer number (53908092).

Almost surely, 2^1310120305 is an apocalyptic number.

It is an amenable number.

1310120305 is a deficient number, since it is larger than the sum of its proper divisors (414938639).

1310120305 is a wasteful number, since it uses less digits than its factorization.

1310120305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1310120305 is about 36195.5840538594. The cubic root of 1310120305 is about 1094.2176754598.

Adding to 1310120305 its reverse (5030210131), we get a palindrome (6340330436).

The spelling of 1310120305 in words is "one billion, three hundred ten million, one hundred twenty thousand, three hundred five".