201351342505 has 8 divisors (see below), whose sum is σ = 241624653192. Its totient is φ = 161079045888.

The previous prime is 201351342481. The next prime is 201351342527. The reversal of 201351342505 is 505243153102.

It can be written as a sum of positive squares in 4 ways, for example, as 136222260889 + 65129081616 = 369083^2 + 255204^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201351342505 - 2⁷ = 201351342377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288769 + ... + 697201.

It is an arithmetic number, because the mean of its divisors is an integer number (30203081649).

Almost surely, 2^201351342505 is an apocalyptic number.

It is an amenable number.

201351342505 is a deficient number, since it is larger than the sum of its proper divisors (40273310687).

201351342505 is an equidigital number, since it uses as much as digits as its factorization.

201351342505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507035.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 201351342505 its reverse (505243153102), we get a palindrome (706594495607).

The spelling of 201351342505 in words is "two hundred one billion, three hundred fifty-one million, three hundred forty-two thousand, five hundred five".