340210040300321 has 4 divisors (see below), whose sum is σ = 346629097664532. Its totient is φ = 333790982936112.

The previous prime is 340210040300281. The next prime is 340210040300341. The reversal of 340210040300321 is 123003040012043.

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 291219685825600 + 48990354474721 = 17065160^2 + 6999311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340210040300321 is a prime.

It is a super-2 number, since 2×340210040300321² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340210040300341) 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, 3209528682026 + ... + 3209528682131.

It is an arithmetic number, because the mean of its divisors is an integer number (86657274416133).

Almost surely, 2^{340210040300321} is an apocalyptic number.

It is an amenable number.

340210040300321 is a deficient number, since it is larger than the sum of its proper divisors (6419057364211).

340210040300321 is an equidigital number, since it uses as much as digits as its factorization.

340210040300321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6419057364210.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 340210040300321 its reverse (123003040012043), we get a palindrome (463213080312364).

The spelling of 340210040300321 in words is "three hundred forty trillion, two hundred ten billion, forty million, three hundred thousand, three hundred twenty-one".