342047231521 has 2 divisors, whose sum is σ = 342047231522. Its totient is φ = 342047231520.

The previous prime is 342047231483. The next prime is 342047231551. The reversal of 342047231521 is 125132740243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191087008225 + 150960223296 = 437135^2 + 388536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342047231521 is a prime.

It is not a weakly prime, because it can be changed into another prime (342047231551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171023615760 + 171023615761.

It is an arithmetic number, because the mean of its divisors is an integer number (171023615761).

Almost surely, 2^342047231521 is an apocalyptic number.

It is an amenable number.

342047231521 is a deficient number, since it is larger than the sum of its proper divisors (1).

342047231521 is an equidigital number, since it uses as much as digits as its factorization.

342047231521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 342047231521 its reverse (125132740243), we get a palindrome (467179971764).

The spelling of 342047231521 in words is "three hundred forty-two billion, forty-seven million, two hundred thirty-one thousand, five hundred twenty-one".