1312011295 has 64 divisors (see below), whose sum is σ = 1992646656. Its totient is φ = 808611840.

The previous prime is 1312011257. The next prime is 1312011299. The reversal of 1312011295 is 5921102131.

It is not a de Polignac number, because 1312011295 - 2¹¹ = 1312009247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312011299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1530507 + ... + 1531363.

It is an arithmetic number, because the mean of its divisors is an integer number (31135104).

Almost surely, 2^1312011295 is an apocalyptic number.

1312011295 is a deficient number, since it is larger than the sum of its proper divisors (680635361).

1312011295 is a wasteful number, since it uses less digits than its factorization.

1312011295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 1312011295 is about 36221.6964677250. The cubic root of 1312011295 is about 1094.7438764894.

It can be divided in two parts, 131201 and 1295, that added together give a square (132496 = 364²).

The spelling of 1312011295 in words is "one billion, three hundred twelve million, eleven thousand, two hundred ninety-five".