228521132243 has 8 divisors (see below), whose sum is σ = 229680805200. Its totient is φ = 227364385248.

The previous prime is 228521132239. The next prime is 228521132311. The reversal of 228521132243 is 342231125822.

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

It is a cyclic number.

It is not a de Polignac number, because 228521132243 - 2² = 228521132239 is a prime.

It is a super-2 number, since 2×228521132243² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228521132233) 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, 574808 + ... + 887381.

It is an arithmetic number, because the mean of its divisors is an integer number (28710100650).

Almost surely, 2^228521132243 is an apocalyptic number.

228521132243 is a deficient number, since it is larger than the sum of its proper divisors (1159672957).

228521132243 is a wasteful number, since it uses less digits than its factorization.

228521132243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462981.

The product of its digits is 46080, while the sum is 35.

The spelling of 228521132243 in words is "two hundred twenty-eight billion, five hundred twenty-one million, one hundred thirty-two thousand, two hundred forty-three".