202031213 has 16 divisors (see below), whose sum is σ = 218344896. Its totient is φ = 186251520.

The previous prime is 202031201. The next prime is 202031227. The reversal of 202031213 is 312130202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 202031213 - 2¹⁰ = 202030189 is a prime.

It is a super-2 number, since 2×202031213² = 81633222052502738, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202031233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184295 + ... + 185387.

It is an arithmetic number, because the mean of its divisors is an integer number (13646556).

Almost surely, 2^202031213 is an apocalyptic number.

It is an amenable number.

202031213 is a deficient number, since it is larger than the sum of its proper divisors (16313683).

202031213 is a wasteful number, since it uses less digits than its factorization.

202031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 202031213 is about 14213.7684306450. The cubic root of 202031213 is about 586.7766506019.

Adding to 202031213 its reverse (312130202), we get a palindrome (514161415).

It can be divided in two parts, 2020 and 31213, that added together give a palindrome (33233).

The spelling of 202031213 in words is "two hundred two million, thirty-one thousand, two hundred thirteen".