1311782053 has 4 divisors (see below), whose sum is σ = 1347235660. Its totient is φ = 1276328448.

The previous prime is 1311782029. The next prime is 1311782057. The reversal of 1311782053 is 3502871131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1209509284 + 102272769 = 34778^2 + 10113^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311782053 - 2¹³ = 1311773861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311782057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17726748 + ... + 17726821.

It is an arithmetic number, because the mean of its divisors is an integer number (336808915).

Almost surely, 2^1311782053 is an apocalyptic number.

It is an amenable number.

1311782053 is a deficient number, since it is larger than the sum of its proper divisors (35453607).

1311782053 is an equidigital number, since it uses as much as digits as its factorization.

1311782053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35453606.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 1311782053 is about 36218.5319001199. The cubic root of 1311782053 is about 1094.6801128378.

The spelling of 1311782053 in words is "one billion, three hundred eleven million, seven hundred eighty-two thousand, fifty-three".