212431534 has 8 divisors (see below), whose sum is σ = 364168368. Its totient is φ = 91042080.

The previous prime is 212431501. The next prime is 212431547. The reversal of 212431534 is 435134212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 212431499 and 212431508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7586827 + ... + 7586854.

It is an arithmetic number, because the mean of its divisors is an integer number (45521046).

Almost surely, 2^212431534 is an apocalyptic number.

212431534 is a deficient number, since it is larger than the sum of its proper divisors (151736834).

212431534 is a wasteful number, since it uses less digits than its factorization.

212431534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15173690.

The product of its digits is 2880, while the sum is 25.

The square root of 212431534 is about 14575.0311835001. The cubic root of 212431534 is about 596.6775004362.

Adding to 212431534 its reverse (435134212), we get a palindrome (647565746).

The spelling of 212431534 in words is "two hundred twelve million, four hundred thirty-one thousand, five hundred thirty-four".