228347312449 has 3 divisors (see below), whose sum is σ = 228347790307. Its totient is φ = 228346834592.

The previous prime is 228347312443. The next prime is 228347312471. The reversal of 228347312449 is 944213743822.

The square root of 228347312449 is 477857.

It is a perfect power (a square), and thus also a powerful number.

228347312449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 222392412225 + 5954900224 = 471585^2 + 77168^2 .

It is not a de Polignac number, because 228347312449 - 2³³ = 219757377857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228347312443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 238929 + ... + 716785.

Almost surely, 2^228347312449 is an apocalyptic number.

228347312449 is the 477857-th square number.

228347312449 is the 238929-th centered octagonal number.

It is an amenable number.

228347312449 is a deficient number, since it is larger than the sum of its proper divisors (477858).

228347312449 is an frugal number, since it uses more digits than its factorization.

228347312449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955714 (or 477857 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 49.

Multiplying 228347312449 by its sum of digits (49), we get a square (11189018310001 = 3344999²).

It can be divided in two parts, 2283473 and 12449, that added together give a palindrome (2295922).

The spelling of 228347312449 in words is "two hundred twenty-eight billion, three hundred forty-seven million, three hundred twelve thousand, four hundred forty-nine".