340431312243413 has 4 divisors (see below), whose sum is σ = 349632158520300. Its totient is φ = 331230465966528.

The previous prime is 340431312243409. The next prime is 340431312243427. The reversal of 340431312243413 is 314342213134043.

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

It can be written as a sum of positive squares in 2 ways, for example, as 257491349692369 + 82939962551044 = 16046537^2 + 9107138^2 .

It is a cyclic number.

It is not a de Polignac number, because 340431312243413 - 2² = 340431312243409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340431312243313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4600423138388 + ... + 4600423138461.

It is an arithmetic number, because the mean of its divisors is an integer number (87408039630075).

Almost surely, 2^{340431312243413} is an apocalyptic number.

It is an amenable number.

340431312243413 is a deficient number, since it is larger than the sum of its proper divisors (9200846276887).

340431312243413 is an equidigital number, since it uses as much as digits as its factorization.

340431312243413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9200846276886.

The product of its (nonzero) digits is 248832, while the sum is 38.

Adding to 340431312243413 its reverse (314342213134043), we get a palindrome (654773525377456).

The spelling of 340431312243413 in words is "three hundred forty trillion, four hundred thirty-one billion, three hundred twelve million, two hundred forty-three thousand, four hundred thirteen".