340435211221340 has 192 divisors, whose sum is σ = 795188843581440. Its totient is φ = 121895055636480.

The previous prime is 340435211221337. The next prime is 340435211221361. The reversal of 340435211221340 is 43122112534043.

It is a super-2 number, since 2×340435211221340² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 340435211221340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1325486774 + ... + 1325743586.

It is an arithmetic number, because the mean of its divisors is an integer number (4141608560320).

Almost surely, 2^{340435211221340} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340435211221340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397594421790720).

340435211221340 is an abundant number, since it is smaller than the sum of its proper divisors (454753632360100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340435211221340 is a wasteful number, since it uses less digits than its factorization.

340435211221340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259532 (or 259530 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 340435211221340 its reverse (43122112534043), we get a palindrome (383557323755383).

The spelling of 340435211221340 in words is "three hundred forty trillion, four hundred thirty-five billion, two hundred eleven million, two hundred twenty-one thousand, three hundred forty".