228531301 has 2 divisors, whose sum is σ = 228531302. Its totient is φ = 228531300.

The previous prime is 228531299. The next prime is 228531307. The reversal of 228531301 is 103135822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114597025 + 113934276 = 10705^2 + 10674^2 .

It is a cyclic number.

It is not a de Polignac number, because 228531301 - 2¹ = 228531299 is a prime.

Together with 228531299, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228531307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114265650 + 114265651.

It is an arithmetic number, because the mean of its divisors is an integer number (114265651).

Almost surely, 2^228531301 is an apocalyptic number.

It is an amenable number.

228531301 is a deficient number, since it is larger than the sum of its proper divisors (1).

228531301 is an equidigital number, since it uses as much as digits as its factorization.

228531301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 228531301 is about 15117.2517674344. The cubic root of 228531301 is about 611.3856353725.

The spelling of 228531301 in words is "two hundred twenty-eight million, five hundred thirty-one thousand, three hundred one".