3135661121 has 4 divisors (see below), whose sum is σ = 3136273152. Its totient is φ = 3135049092.

The previous prime is 3135661079. The next prime is 3135661159. The reversal of 3135661121 is 1211665313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3135661121 - 2¹⁰ = 3135660097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3135601121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298265 + ... + 308598.

It is an arithmetic number, because the mean of its divisors is an integer number (784068288).

Almost surely, 2^3135661121 is an apocalyptic number.

It is an amenable number.

3135661121 is a deficient number, since it is larger than the sum of its proper divisors (612031).

3135661121 is an equidigital number, since it uses as much as digits as its factorization.

3135661121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612030.

The product of its digits is 3240, while the sum is 29.

The square root of 3135661121 is about 55996.9742128983. The cubic root of 3135661121 is about 1463.6695583914.

The spelling of 3135661121 in words is "three billion, one hundred thirty-five million, six hundred sixty-one thousand, one hundred twenty-one".