212031013 has 4 divisors (see below), whose sum is σ = 223190560. Its totient is φ = 200871468.

The previous prime is 212031011. The next prime is 212031031. The reversal of 212031013 is 310130212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212031013 - 2¹ = 212031011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212030984 and 212031002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212031011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5579745 + ... + 5579782.

It is an arithmetic number, because the mean of its divisors is an integer number (55797640).

Almost surely, 2^212031013 is an apocalyptic number.

It is an amenable number.

212031013 is a deficient number, since it is larger than the sum of its proper divisors (11159547).

212031013 is a wasteful number, since it uses less digits than its factorization.

212031013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11159546.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 212031013 is about 14561.2847304075. The cubic root of 212031013 is about 596.3022701753.

Adding to 212031013 its reverse (310130212), we get a palindrome (522161225).

It can be divided in two parts, 2120 and 31013, that added together give a palindrome (33133).

The spelling of 212031013 in words is "two hundred twelve million, thirty-one thousand, thirteen".