340113312421 has 4 divisors (see below), whose sum is σ = 340118390592. Its totient is φ = 340108234252.

The previous prime is 340113312401. The next prime is 340113312433. The reversal of 340113312421 is 124213311043.

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 340113312421 - 2¹¹ = 340113310373 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 (340113312401) 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, 2437261 + ... + 2573026.

It is an arithmetic number, because the mean of its divisors is an integer number (85029597648).

Almost surely, 2^340113312421 is an apocalyptic number.

It is an amenable number.

340113312421 is a deficient number, since it is larger than the sum of its proper divisors (5078171).

340113312421 is an equidigital number, since it uses as much as digits as its factorization.

340113312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5078170.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 340113312421 its reverse (124213311043), we get a palindrome (464326623464).

The spelling of 340113312421 in words is "three hundred forty billion, one hundred thirteen million, three hundred twelve thousand, four hundred twenty-one".