1312310332243 has 4 divisors (see below), whose sum is σ = 1312321251928. Its totient is φ = 1312299412560.

The previous prime is 1312310332231. The next prime is 1312310332301. The reversal of 1312310332243 is 3422330132131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312310332243 is a prime.

It is a super-2 number, since 2×1312310332243² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312310332043) 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, 5277546 + ... + 5520607.

It is an arithmetic number, because the mean of its divisors is an integer number (328080312982).

Almost surely, 2^{1312310332243} is an apocalyptic number.

1312310332243 is a deficient number, since it is larger than the sum of its proper divisors (10919685).

1312310332243 is a wasteful number, since it uses less digits than its factorization.

1312310332243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10919684.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 1312310332243 its reverse (3422330132131), we get a palindrome (4734640464374).

The spelling of 1312310332243 in words is "one trillion, three hundred twelve billion, three hundred ten million, three hundred thirty-two thousand, two hundred forty-three".