1310272065 has 16 divisors (see below), whose sum is σ = 2329372800. Its totient is φ = 698811696.

The previous prime is 1310272037. The next prime is 1310272069. The reversal of 1310272065 is 5602720131.

It is a happy number.

It is not a de Polignac number, because 1310272065 - 2¹⁰ = 1310271041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1310272069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4852725 + ... + 4852994.

It is an arithmetic number, because the mean of its divisors is an integer number (145585800).

Almost surely, 2^1310272065 is an apocalyptic number.

1310272065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1310272065 is a deficient number, since it is larger than the sum of its proper divisors (1019100735).

1310272065 is an equidigital number, since it uses as much as digits as its factorization.

1310272065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9705733 (or 9705727 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 1310272065 is about 36197.6803814830. The cubic root of 1310272065 is about 1094.2599240132.

Adding to 1310272065 its reverse (5602720131), we get a palindrome (6912992196).

The spelling of 1310272065 in words is "one billion, three hundred ten million, two hundred seventy-two thousand, sixty-five".