3121131133 has 8 divisors (see below), whose sum is σ = 3349998648. Its totient is φ = 2897293824.

The previous prime is 3121131127. The next prime is 3121131163. The reversal of 3121131133 is 3311311213.

It can be written as a sum of positive squares in 4 ways, for example, as 636906169 + 2484224964 = 25237^2 + 49842^2 .

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 3121131133 - 2²⁹ = 2584260221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3121131133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121131163) 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, 1256266 + ... + 1258747.

It is an arithmetic number, because the mean of its divisors is an integer number (418749831).

Almost surely, 2^3121131133 is an apocalyptic number.

It is an amenable number.

3121131133 is a deficient number, since it is larger than the sum of its proper divisors (228867515).

3121131133 is a wasteful number, since it uses less digits than its factorization.

3121131133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515103.

The product of its digits is 162, while the sum is 19.

The square root of 3121131133 is about 55867.0845221048. The cubic root of 3121131133 is about 1461.4052793764.

Adding to 3121131133 its reverse (3311311213), we get a palindrome (6432442346).

The spelling of 3121131133 in words is "three billion, one hundred twenty-one million, one hundred thirty-one thousand, one hundred thirty-three".