2031332121 has 32 divisors (see below), whose sum is σ = 3703857920. Its totient is φ = 1071470592.

The previous prime is 2031332117. The next prime is 2031332129. The reversal of 2031332121 is 1212331302.

It is not a de Polignac number, because 2031332121 - 2² = 2031332117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2031332094 and 2031332103.

It is not an unprimeable number, because it can be changed into a prime (2031332129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 410920 + ... + 415833.

It is an arithmetic number, because the mean of its divisors is an integer number (115745560).

Almost surely, 2^2031332121 is an apocalyptic number.

2031332121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2031332121 is a deficient number, since it is larger than the sum of its proper divisors (1672525799).

2031332121 is a wasteful number, since it uses less digits than its factorization.

2031332121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826782 (or 826776 counting only the distinct ones).

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

The square root of 2031332121 is about 45070.3019847882. The cubic root of 2031332121 is about 1266.4663215531.

Adding to 2031332121 its reverse (1212331302), we get a palindrome (3243663423).

The spelling of 2031332121 in words is "two billion, thirty-one million, three hundred thirty-two thousand, one hundred twenty-one".