340431122323220 has 72 divisors (see below), whose sum is σ = 759597810961920. Its totient is φ = 128134378897920.

The previous prime is 340431122323207. The next prime is 340431122323249. The reversal of 340431122323220 is 22323221134043.

It is a super-2 number, since 2×340431122323220² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20121461 + ... + 32950499.

Almost surely, 2^{340431122323220} 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 340431122323220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379798905480960).

340431122323220 is an abundant number, since it is smaller than the sum of its proper divisors (419166688638700).

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

340431122323220 is a wasteful number, since it uses less digits than its factorization.

340431122323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12833673 (or 12833654 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 340431122323220 its reverse (22323221134043), we get a palindrome (362754343457263).

The spelling of 340431122323220 in words is "three hundred forty trillion, four hundred thirty-one billion, one hundred twenty-two million, three hundred twenty-three thousand, two hundred twenty".