2031021213 has 12 divisors (see below), whose sum is σ = 2932362720. Its totient is φ = 1249858896.

The previous prime is 2031021163. The next prime is 2031021217. The reversal of 2031021213 is 3121201302.

It is not a de Polignac number, because 2031021213 - 2⁹ = 2031020701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2031021192 and 2031021201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031021217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2002473 + ... + 2003486.

It is an arithmetic number, because the mean of its divisors is an integer number (244363560).

Almost surely, 2^2031021213 is an apocalyptic number.

It is an amenable number.

2031021213 is a deficient number, since it is larger than the sum of its proper divisors (901341507).

2031021213 is a wasteful number, since it uses less digits than its factorization.

2031021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005988 (or 4005975 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2031021213 is about 45066.8527079493. The cubic root of 2031021213 is about 1266.4017047437.

Adding to 2031021213 its reverse (3121201302), we get a palindrome (5152222515).

The spelling of 2031021213 in words is "two billion, thirty-one million, twenty-one thousand, two hundred thirteen".