351172215113 has 8 divisors (see below), whose sum is σ = 360830954568. Its totient is φ = 341522296704.

The previous prime is 351172215109. The next prime is 351172215151. The reversal of 351172215113 is 311512271153.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3529904569 + 347642310544 = 59413^2 + 589612^2 .

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 351172215113 - 2² = 351172215109 is a prime.

It is a super-2 number, since 2×351172215113² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 351172215113.

It is not an unprimeable number, because it can be changed into a prime (351172215313) 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 in 7 ways as a sum of consecutive naturals, for example, 2124506 + ... + 2283827.

It is an arithmetic number, because the mean of its divisors is an integer number (45103869321).

Almost surely, 2^351172215113 is an apocalyptic number.

It is an amenable number.

351172215113 is a deficient number, since it is larger than the sum of its proper divisors (9658739455).

351172215113 is a wasteful number, since it uses less digits than its factorization.

351172215113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410523.

The product of its digits is 6300, while the sum is 32.

Adding to 351172215113 its reverse (311512271153), we get a palindrome (662684486266).

The spelling of 351172215113 in words is "three hundred fifty-one billion, one hundred seventy-two million, two hundred fifteen thousand, one hundred thirteen".