3121206133 has 8 divisors (see below), whose sum is σ = 3289073600. Its totient is φ = 2953698048.

The previous prime is 3121206107. The next prime is 3121206149. The reversal of 3121206133 is 3316021213.

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

It is a de Polignac number, because none of the positive numbers 2^k-3121206133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121201133) by changing a digit.

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, 71916 + ... + 106837.

It is an arithmetic number, because the mean of its divisors is an integer number (411134200).

Almost surely, 2^3121206133 is an apocalyptic number.

It is an amenable number.

3121206133 is a deficient number, since it is larger than the sum of its proper divisors (167867467).

3121206133 is a wasteful number, since it uses less digits than its factorization.

3121206133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179691.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 3121206133 is about 55867.7557541020. The cubic root of 3121206133 is about 1461.4169850171.

Adding to 3121206133 its reverse (3316021213), we get a palindrome (6437227346).

The spelling of 3121206133 in words is "three billion, one hundred twenty-one million, two hundred six thousand, one hundred thirty-three".