212353453 has 4 divisors (see below), whose sum is σ = 228688348. Its totient is φ = 196018560.

The previous prime is 212353451. The next prime is 212353469. The reversal of 212353453 is 354353212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37002889 + 175350564 = 6083^2 + 13242^2 .

It is a cyclic number.

It is not a de Polignac number, because 212353453 - 2¹ = 212353451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212353451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8167428 + ... + 8167453.

It is an arithmetic number, because the mean of its divisors is an integer number (57172087).

Almost surely, 2^212353453 is an apocalyptic number.

It is an amenable number.

212353453 is a deficient number, since it is larger than the sum of its proper divisors (16334895).

212353453 is a wasteful number, since it uses less digits than its factorization.

212353453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16334894.

The product of its digits is 10800, while the sum is 28.

The square root of 212353453 is about 14572.3523495694. The cubic root of 212353453 is about 596.6043868635.

The spelling of 212353453 in words is "two hundred twelve million, three hundred fifty-three thousand, four hundred fifty-three".