312540323343 has 4 divisors (see below), whose sum is σ = 416720431128. Its totient is φ = 208360215560.

The previous prime is 312540323339. The next prime is 312540323363. The reversal of 312540323343 is 343323045213.

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 312540323343 - 2² = 312540323339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312540323363) 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, 52090053888 + ... + 52090053893.

It is an arithmetic number, because the mean of its divisors is an integer number (104180107782).

Almost surely, 2^312540323343 is an apocalyptic number.

312540323343 is a deficient number, since it is larger than the sum of its proper divisors (104180107785).

312540323343 is a wasteful number, since it uses less digits than its factorization.

312540323343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104180107784.

The product of its (nonzero) digits is 77760, while the sum is 33.

Adding to 312540323343 its reverse (343323045213), we get a palindrome (655863368556).

The spelling of 312540323343 in words is "three hundred twelve billion, five hundred forty million, three hundred twenty-three thousand, three hundred forty-three".