1312534522 has 16 divisors (see below), whose sum is σ = 2177553672. Its totient is φ = 589412160.

The previous prime is 1312534511. The next prime is 1312534523. The reversal of 1312534522 is 2254352131.

It can be written as a sum of positive squares in 4 ways, for example, as 1268855641 + 43678881 = 35621^2 + 6609^2 .

It is not an unprimeable number, because it can be changed into a prime (1312534523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681229 + ... + 683152.

Almost surely, 2^1312534522 is an apocalyptic number.

1312534522 is a deficient number, since it is larger than the sum of its proper divisors (865019150).

1312534522 is a wasteful number, since it uses less digits than its factorization.

1312534522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364433.

The product of its digits is 7200, while the sum is 28.

The square root of 1312534522 is about 36228.9183112055. The cubic root of 1312534522 is about 1094.8893842376.

Adding to 1312534522 its reverse (2254352131), we get a palindrome (3566886653).

The spelling of 1312534522 in words is "one billion, three hundred twelve million, five hundred thirty-four thousand, five hundred twenty-two".