212013031 has 4 divisors (see below), whose sum is σ = 212405464. Its totient is φ = 211620600.

The previous prime is 212013017. The next prime is 212013059. The reversal of 212013031 is 130310212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212013031 - 2⁹ = 212012519 is a prime.

It is a super-2 number, since 2×212013031² = 89899050627613922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212073031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195405 + ... + 196486.

It is an arithmetic number, because the mean of its divisors is an integer number (53101366).

Almost surely, 2^212013031 is an apocalyptic number.

212013031 is a deficient number, since it is larger than the sum of its proper divisors (392433).

212013031 is an equidigital number, since it uses as much as digits as its factorization.

212013031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392432.

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

The square root of 212013031 is about 14560.6672580620. The cubic root of 212013031 is about 596.2854125618.

Adding to 212013031 its reverse (130310212), we get a palindrome (342323243).

It can be divided in two parts, 2120 and 13031, that added together give a palindrome (15151).

The spelling of 212013031 in words is "two hundred twelve million, thirteen thousand, thirty-one".