3135220205 has 8 divisors (see below), whose sum is σ = 4051669272. Its totient is φ = 2315239488.

The previous prime is 3135220181. The next prime is 3135220217. The reversal of 3135220205 is 5020225313.

It can be written as a sum of positive squares in 4 ways, for example, as 169546441 + 2965673764 = 13021^2 + 54458^2 .

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 3135220205 - 2²² = 3131025901 is a prime.

It is a Duffinian number.

It is a congruent 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, 24117014 + ... + 24117143.

It is an arithmetic number, because the mean of its divisors is an integer number (506458659).

Almost surely, 2^3135220205 is an apocalyptic number.

It is an amenable number.

3135220205 is a deficient number, since it is larger than the sum of its proper divisors (916449067).

3135220205 is a wasteful number, since it uses less digits than its factorization.

3135220205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48234175.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 3135220205 is about 55993.0371117695. The cubic root of 3135220205 is about 1463.6009513202.

Adding to 3135220205 its reverse (5020225313), we get a palindrome (8155445518).

The spelling of 3135220205 in words is "three billion, one hundred thirty-five million, two hundred twenty thousand, two hundred five".