340221431221431 has 16 divisors (see below), whose sum is σ = 455096092239360. Its totient is φ = 226080557383520.

The previous prime is 340221431221393. The next prime is 340221431221453. The reversal of 340221431221431 is 134122134122043.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340221431221431 is a prime.

It is a super-2 number, since 2×340221431221431² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340221431221392 and 340221431221401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340221431228431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44488141 + ... + 51571673.

It is an arithmetic number, because the mean of its divisors is an integer number (28443505764960).

Almost surely, 2^{340221431221431} is an apocalyptic number.

340221431221431 is a deficient number, since it is larger than the sum of its proper divisors (114874661017929).

340221431221431 is a wasteful number, since it uses less digits than its factorization.

340221431221431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7135326.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 340221431221431 its reverse (134122134122043), we get a palindrome (474343565343474).

The spelling of 340221431221431 in words is "three hundred forty trillion, two hundred twenty-one billion, four hundred thirty-one million, two hundred twenty-one thousand, four hundred thirty-one".