343126134115021 has 4 divisors (see below), whose sum is σ = 343213421357344. Its totient is φ = 343038846872700.

The previous prime is 343126134115019. The next prime is 343126134115099. The reversal of 343126134115021 is 120511431621343.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 343126134115021 - 2¹ = 343126134115019 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 (343126134415021) 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, 43643615265 + ... + 43643623126.

It is an arithmetic number, because the mean of its divisors is an integer number (85803355339336).

Almost surely, 2^{343126134115021} is an apocalyptic number.

It is an amenable number.

343126134115021 is a deficient number, since it is larger than the sum of its proper divisors (87287242323).

343126134115021 is an equidigital number, since it uses as much as digits as its factorization.

343126134115021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87287242322.

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 343126134115021 its reverse (120511431621343), we get a palindrome (463637565736364).

The spelling of 343126134115021 in words is "three hundred forty-three trillion, one hundred twenty-six billion, one hundred thirty-four million, one hundred fifteen thousand, twenty-one".