1312452013 has 4 divisors (see below), whose sum is σ = 1369515168. Its totient is φ = 1255388860.

The previous prime is 1312452007. The next prime is 1312452041. The reversal of 1312452013 is 3102542131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3102542131 = 13 ⋅238657087.

It is a cyclic number.

It is not a de Polignac number, because 1312452013 - 2⁹ = 1312451501 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 (1312452083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28531543 + ... + 28531588.

It is an arithmetic number, because the mean of its divisors is an integer number (342378792).

Almost surely, 2^1312452013 is an apocalyptic number.

It is an amenable number.

1312452013 is a deficient number, since it is larger than the sum of its proper divisors (57063155).

1312452013 is an equidigital number, since it uses as much as digits as its factorization.

1312452013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57063154.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1312452013 is about 36227.7795759000. The cubic root of 1312452013 is about 1094.8664413182.

Adding to 1312452013 its reverse (3102542131), we get a palindrome (4414994144).

The spelling of 1312452013 in words is "one billion, three hundred twelve million, four hundred fifty-two thousand, thirteen".