212431134 has 32 divisors (see below), whose sum is σ = 459319680. Its totient is φ = 65269152.

The previous prime is 212431129. The next prime is 212431139. The reversal of 212431134 is 431134212.

212431134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212431129) and next prime (212431139).

It is a self number, because there is not a number n which added to its sum of digits gives 212431134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212431139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20964 + ... + 29399.

It is an arithmetic number, because the mean of its divisors is an integer number (14353740).

Almost surely, 2^212431134 is an apocalyptic number.

212431134 is an abundant number, since it is smaller than the sum of its proper divisors (246888546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212431134 is a wasteful number, since it uses less digits than its factorization.

212431134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50424.

The product of its digits is 576, while the sum is 21.

The square root of 212431134 is about 14575.0174613961. The cubic root of 212431134 is about 596.6771259294.

Adding to 212431134 its reverse (431134212), we get a palindrome (643565346).

The spelling of 212431134 in words is "two hundred twelve million, four hundred thirty-one thousand, one hundred thirty-four".