340231232221321 has 6 divisors (see below), whose sum is σ = 395779188502410. Its totient is φ = 291626770475376.

The previous prime is 340231232221253. The next prime is 340231232221337. The reversal of 340231232221321 is 123122232132043.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 320755957134921 + 19475275086400 = 17909661^2 + 4413080^2 .

It is not a de Polignac number, because 340231232221321 - 2²⁷ = 340231098003593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340231232221351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3471747267516 + ... + 3471747267613.

It is an arithmetic number, because the mean of its divisors is an integer number (65963198083735).

Almost surely, 2^{340231232221321} is an apocalyptic number.

It is an amenable number.

340231232221321 is a deficient number, since it is larger than the sum of its proper divisors (55547956281089).

340231232221321 is an equidigital number, since it uses as much as digits as its factorization.

340231232221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6943494535143 (or 6943494535136 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 340231232221321 its reverse (123122232132043), we get a palindrome (463353464353364).

The spelling of 340231232221321 in words is "three hundred forty trillion, two hundred thirty-one billion, two hundred thirty-two million, two hundred twenty-one thousand, three hundred twenty-one".