212431533 has 24 divisors (see below), whose sum is σ = 303141888. Its totient is φ = 132280128.

The previous prime is 212431501. The next prime is 212431547. The reversal of 212431533 is 335134212.

It is not a de Polignac number, because 212431533 - 2⁵ = 212431501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212431573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77716 + ... + 80402.

It is an arithmetic number, because the mean of its divisors is an integer number (12630912).

Almost surely, 2^212431533 is an apocalyptic number.

It is an amenable number.

212431533 is a deficient number, since it is larger than the sum of its proper divisors (90710355).

212431533 is a wasteful number, since it uses less digits than its factorization.

212431533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2801 (or 2782 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 212431533 is about 14575.0311491948. The cubic root of 212431533 is about 596.6774994999.

Adding to 212431533 its reverse (335134212), we get a palindrome (547565745).

The spelling of 212431533 in words is "two hundred twelve million, four hundred thirty-one thousand, five hundred thirty-three".