2031123321 has 12 divisors (see below), whose sum is σ = 2983571760. Its totient is φ = 1331131320.

The previous prime is 2031123301. The next prime is 2031123371. The reversal of 2031123321 is 1233211302.

2031123321 is a `hidden beast` number, since 20 + 311 + 2 + 332 + 1 = 666.

It is not a de Polignac number, because 2031123321 - 2¹⁰ = 2031122297 is a prime.

It is a super-2 number, since 2×2031123321² = 8250923890220138082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2031123294 and 2031123303.

It is not an unprimeable number, because it can be changed into a prime (2031123301) 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 11 ways as a sum of consecutive naturals, for example, 1912015 + ... + 1913076.

It is an arithmetic number, because the mean of its divisors is an integer number (248630980).

Almost surely, 2^2031123321 is an apocalyptic number.

It is an amenable number.

2031123321 is a deficient number, since it is larger than the sum of its proper divisors (952448439).

2031123321 is a wasteful number, since it uses less digits than its factorization.

2031123321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3825156 (or 3825153 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2031123321 is about 45067.9855440644. The cubic root of 2031123321 is about 1266.4229268392.

Adding to 2031123321 its reverse (1233211302), we get a palindrome (3264334623).

The spelling of 2031123321 in words is "two billion, thirty-one million, one hundred twenty-three thousand, three hundred twenty-one".