3121290105 has 8 divisors (see below), whose sum is σ = 4994064192. Its totient is φ = 1664688048.

The previous prime is 3121290091. The next prime is 3121290131. The reversal of 3121290105 is 5010921213.

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

It is not a de Polignac number, because 3121290105 - 2²² = 3117095801 is a prime.

It is a super-2 number, since 2×3121290105² = 19484903839141822050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104042989 + ... + 104043018.

It is an arithmetic number, because the mean of its divisors is an integer number (624258024).

Almost surely, 2^3121290105 is an apocalyptic number.

It is an amenable number.

3121290105 is a deficient number, since it is larger than the sum of its proper divisors (1872774087).

3121290105 is a wasteful number, since it uses less digits than its factorization.

3121290105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208086015.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 3121290105 is about 55868.5072737763. The cubic root of 3121290105 is about 1461.4300907419.

The spelling of 3121290105 in words is "three billion, one hundred twenty-one million, two hundred ninety thousand, one hundred five".