2107031121 has 24 divisors (see below), whose sum is σ = 3286459176. Its totient is φ = 1293131520.

The previous prime is 2107031063. The next prime is 2107031159. The reversal of 2107031121 is 1211307012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 71216721 + 2035814400 = 8439^2 + 45120^2 .

It is not a de Polignac number, because 2107031121 - 2⁶ = 2107031057 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2107031094 and 2107031103.

It is not an unprimeable number, because it can be changed into a prime (2107031161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19501 + ... + 67781.

It is an arithmetic number, because the mean of its divisors is an integer number (136935799).

Almost surely, 2^2107031121 is an apocalyptic number.

It is an amenable number.

2107031121 is a deficient number, since it is larger than the sum of its proper divisors (1179428055).

2107031121 is a wasteful number, since it uses less digits than its factorization.

2107031121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48673 (or 48670 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 2107031121 is about 45902.4086622914. The cubic root of 2107031121 is about 1282.0067644939.

Adding to 2107031121 its reverse (1211307012), we get a palindrome (3318338133).

The spelling of 2107031121 in words is "two billion, one hundred seven million, thirty-one thousand, one hundred twenty-one".