212928231 has 8 divisors (see below), whose sum is σ = 298846720. Its totient is φ = 134480952.

The previous prime is 212928161. The next prime is 212928239. The reversal of 212928231 is 132829212.

212928231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 212928231 - 2⁷ = 212928103 is a prime.

It is a super-2 number, since 2×212928231² = 90676863113578722, 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 (212928239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1867735 + ... + 1867848.

It is an arithmetic number, because the mean of its divisors is an integer number (37355840).

Almost surely, 2^212928231 is an apocalyptic number.

212928231 is a deficient number, since it is larger than the sum of its proper divisors (85918489).

212928231 is a wasteful number, since it uses less digits than its factorization.

212928231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3735605.

The product of its digits is 3456, while the sum is 30.

The square root of 212928231 is about 14592.0605467494. The cubic root of 212928231 is about 597.1421791558.

The spelling of 212928231 in words is "two hundred twelve million, nine hundred twenty-eight thousand, two hundred thirty-one".