1312452313 has 4 divisors (see below), whose sum is σ = 1312655668. Its totient is φ = 1312248960.

The previous prime is 1312452307. The next prime is 1312452367. The reversal of 1312452313 is 3132542131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3132542131 = 43 ⋅72849817.

It can be written as a sum of positive squares in 2 ways, for example, as 84860944 + 1227591369 = 9212^2 + 35037^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312452313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312452613) 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, 91668 + ... + 105013.

It is an arithmetic number, because the mean of its divisors is an integer number (328163917).

Almost surely, 2^1312452313 is an apocalyptic number.

It is an amenable number.

1312452313 is a deficient number, since it is larger than the sum of its proper divisors (203355).

1312452313 is an equidigital number, since it uses as much as digits as its factorization.

1312452313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203354.

The product of its digits is 2160, while the sum is 25.

The square root of 1312452313 is about 36227.7837163688. The cubic root of 1312452313 is about 1094.8665247397.

Adding to 1312452313 its reverse (3132542131), we get a palindrome (4444994444).

The spelling of 1312452313 in words is "one billion, three hundred twelve million, four hundred fifty-two thousand, three hundred thirteen".