212433897 has 16 divisors (see below), whose sum is σ = 307061888. Its totient is φ = 129859200.

The previous prime is 212433863. The next prime is 212433899. The reversal of 212433897 is 798334212.

It is not a de Polignac number, because 212433897 - 2¹⁸ = 212171753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212433899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12148 + ... + 23925.

It is an arithmetic number, because the mean of its divisors is an integer number (19191368).

Almost surely, 2^212433897 is an apocalyptic number.

It is an amenable number.

212433897 is a deficient number, since it is larger than the sum of its proper divisors (94627991).

212433897 is a wasteful number, since it uses less digits than its factorization.

212433897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36240.

The product of its digits is 72576, while the sum is 39.

The square root of 212433897 is about 14575.1122465661. The cubic root of 212433897 is about 596.6797128254.

The spelling of 212433897 in words is "two hundred twelve million, four hundred thirty-three thousand, eight hundred ninety-seven".