1315211252 has 6 divisors (see below), whose sum is σ = 2301619698. Its totient is φ = 657605624.

The previous prime is 1315211159. The next prime is 1315211279. The reversal of 1315211252 is 2521125131.

It can be written as a sum of positive squares in only one way, i.e., 818188816 + 497022436 = 28604^2 + 22294^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164401403 + ... + 164401410.

It is an arithmetic number, because the mean of its divisors is an integer number (383603283).

Almost surely, 2^1315211252 is an apocalyptic number.

It is an amenable number.

1315211252 is a deficient number, since it is larger than the sum of its proper divisors (986408446).

1315211252 is a wasteful number, since it uses less digits than its factorization.

1315211252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328802817 (or 328802815 counting only the distinct ones).

The product of its digits is 600, while the sum is 23.

The square root of 1315211252 is about 36265.8413937964. The cubic root of 1315211252 is about 1095.6331699439.

Adding to 1315211252 its reverse (2521125131), we get a palindrome (3836336383).

The spelling of 1315211252 in words is "one billion, three hundred fifteen million, two hundred eleven thousand, two hundred fifty-two".