3121130023209 has 16 divisors (see below), whose sum is σ = 5044250543040. Its totient is φ = 1891593953280.

The previous prime is 3121130023201. The next prime is 3121130023259. The reversal of 3121130023209 is 9023200311213.

3121130023209 is a `hidden beast` number, since 3 + 121 + 1 + 300 + 232 + 0 + 9 = 666.

3121130023209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3121130023209 - 2³ = 3121130023201 is a prime.

It is a super-2 number, since 2×3121130023209² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (3121130023201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5254427352 + ... + 5254427945.

It is an arithmetic number, because the mean of its divisors is an integer number (315265658940).

Almost surely, 2^{3121130023209} is an apocalyptic number.

It is an amenable number.

3121130023209 is a deficient number, since it is larger than the sum of its proper divisors (1923120519831).

3121130023209 is a wasteful number, since it uses less digits than its factorization.

3121130023209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10508855317 (or 10508855311 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 3121130023209 in words is "three trillion, one hundred twenty-one billion, one hundred thirty million, twenty-three thousand, two hundred nine".