340121240403321 has 32 divisors (see below), whose sum is σ = 489128351176192. Its totient is φ = 208984334549760.

The previous prime is 340121240403299. The next prime is 340121240403389. The reversal of 340121240403321 is 123304042121043.

It is not a de Polignac number, because 340121240403321 - 2⁹ = 340121240402809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340121240403391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1570941351 + ... + 1571157843.

It is an arithmetic number, because the mean of its divisors is an integer number (15285260974256).

Almost surely, 2^{340121240403321} is an apocalyptic number.

It is an amenable number.

340121240403321 is a deficient number, since it is larger than the sum of its proper divisors (149007110772871).

340121240403321 is a wasteful number, since it uses less digits than its factorization.

340121240403321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278113.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 340121240403321 its reverse (123304042121043), we get a palindrome (463425282524364).

The spelling of 340121240403321 in words is "three hundred forty trillion, one hundred twenty-one billion, two hundred forty million, four hundred three thousand, three hundred twenty-one".