1312452520 has 16 divisors (see below), whose sum is σ = 2953018260. Its totient is φ = 524980992.

The previous prime is 1312452511. The next prime is 1312452521. The reversal of 1312452520 is 252542131.

It can be written as a sum of positive squares in 2 ways, for example, as 1161310084 + 151142436 = 34078^2 + 12294^2 .

It is not an unprimeable number, because it can be changed into a prime (1312452521) 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 3 ways as a sum of consecutive naturals, for example, 16405617 + ... + 16405696.

Almost surely, 2^1312452520 is an apocalyptic number.

1312452520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312452520 is an abundant number, since it is smaller than the sum of its proper divisors (1640565740).

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

1312452520 is a wasteful number, since it uses less digits than its factorization.

1312452520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32811324 (or 32811320 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1312452520 is about 36227.7865732921. The cubic root of 1312452520 is about 1094.8665823005.

Adding to 1312452520 its reverse (252542131), we get a palindrome (1564994651).

The spelling of 1312452520 in words is "one billion, three hundred twelve million, four hundred fifty-two thousand, five hundred twenty".