1312102343 has 4 divisors (see below), whose sum is σ = 1316376600. Its totient is φ = 1307828088.

The previous prime is 1312102307. The next prime is 1312102403. The reversal of 1312102343 is 3432012131.

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

It is a cyclic number.

It is not a de Polignac number, because 1312102343 - 2²⁴ = 1295325127 is a prime.

It is a super-2 number, since 2×1312102343² = 3443225117012179298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312105343) 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, 2136668 + ... + 2137281.

It is an arithmetic number, because the mean of its divisors is an integer number (329094150).

Almost surely, 2^1312102343 is an apocalyptic number.

1312102343 is a deficient number, since it is larger than the sum of its proper divisors (4274257).

1312102343 is an equidigital number, since it uses as much as digits as its factorization.

1312102343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274256.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1312102343 is about 36222.9532617096. The cubic root of 1312102343 is about 1094.7691994256.

Adding to 1312102343 its reverse (3432012131), we get a palindrome (4744114474).

The spelling of 1312102343 in words is "one billion, three hundred twelve million, one hundred two thousand, three hundred forty-three".