1312643353 has 8 divisors (see below), whose sum is σ = 1502592320. Its totient is φ = 1123301520.

The previous prime is 1312643351. The next prime is 1312643359. The reversal of 1312643353 is 3533462131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312643353 - 2¹ = 1312643351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312643351) 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, 147138 + ... + 155803.

It is an arithmetic number, because the mean of its divisors is an integer number (187824040).

Almost surely, 2^1312643353 is an apocalyptic number.

It is an amenable number.

1312643353 is a deficient number, since it is larger than the sum of its proper divisors (189948967).

1312643353 is an equidigital number, since it uses as much as digits as its factorization.

1312643353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303567.

The product of its digits is 19440, while the sum is 31.

The square root of 1312643353 is about 36230.4202708166. The cubic root of 1312643353 is about 1094.9196449308.

The spelling of 1312643353 in words is "one billion, three hundred twelve million, six hundred forty-three thousand, three hundred fifty-three".