1312617252 has 24 divisors (see below), whose sum is σ = 3161573632. Its totient is φ = 423424800.

The previous prime is 1312617157. The next prime is 1312617253. The reversal of 1312617252 is 2527162131.

It is not an unprimeable number, because it can be changed into a prime (1312617253) 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, 1763899 + ... + 1764642.

Almost surely, 2^1312617252 is an apocalyptic number.

1312617252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312617252 is an abundant number, since it is smaller than the sum of its proper divisors (1848956380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312617252 is a wasteful number, since it uses less digits than its factorization.

1312617252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528579 (or 3528577 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 1312617252 is about 36230.0600606734. The cubic root of 1312617252 is about 1094.9123876442.

Adding to 1312617252 its reverse (2527162131), we get a palindrome (3839779383).

The spelling of 1312617252 in words is "one billion, three hundred twelve million, six hundred seventeen thousand, two hundred fifty-two".