212263461 has 6 divisors (see below), whose sum is σ = 306602790. Its totient is φ = 141508968.

The previous prime is 212263433. The next prime is 212263477. The reversal of 212263461 is 164362212.

212263461 is a `hidden beast` number, since 2 + 1 + 22 + 634 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 207532836 + 4730625 = 14406^2 + 2175^2 .

It is not a de Polignac number, because 212263461 - 2¹³ = 212255269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212263861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11792406 + ... + 11792423.

It is an arithmetic number, because the mean of its divisors is an integer number (51100465).

Almost surely, 2^212263461 is an apocalyptic number.

It is an amenable number.

212263461 is a deficient number, since it is larger than the sum of its proper divisors (94339329).

212263461 is a wasteful number, since it uses less digits than its factorization.

212263461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23584835 (or 23584832 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 212263461 is about 14569.2642573330. The cubic root of 212263461 is about 596.5200978205.

The spelling of 212263461 in words is "two hundred twelve million, two hundred sixty-three thousand, four hundred sixty-one".