3121413305 has 8 divisors (see below), whose sum is σ = 3746016072. Its totient is φ = 2496917248.

The previous prime is 3121413263. The next prime is 3121413311. The reversal of 3121413305 is 5033141213.

It can be written as a sum of positive squares in 4 ways, for example, as 8219689 + 3113193616 = 2867^2 + 55796^2 .

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 3121413305 - 2²⁸ = 2852977849 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, 68657 + ... + 104673.

It is an arithmetic number, because the mean of its divisors is an integer number (468252009).

Almost surely, 2^3121413305 is an apocalyptic number.

It is an amenable number.

3121413305 is a deficient number, since it is larger than the sum of its proper divisors (624602767).

3121413305 is a wasteful number, since it uses less digits than its factorization.

3121413305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53355.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 3121413305 is about 55869.6098518685. The cubic root of 3121413305 is about 1461.4493184557.

Adding to 3121413305 its reverse (5033141213), we get a palindrome (8154554518).

The spelling of 3121413305 in words is "three billion, one hundred twenty-one million, four hundred thirteen thousand, three hundred five".