228531299 has 2 divisors, whose sum is σ = 228531300. Its totient is φ = 228531298.

The previous prime is 228531257. The next prime is 228531301. The reversal of 228531299 is 992135822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228531299 - 2²⁴ = 211754083 is a prime.

Together with 228531301, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228531209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114265649 + 114265650.

It is an arithmetic number, because the mean of its divisors is an integer number (114265650).

Almost surely, 2^228531299 is an apocalyptic number.

228531299 is a deficient number, since it is larger than the sum of its proper divisors (1).

228531299 is an equidigital number, since it uses as much as digits as its factorization.

228531299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 228531299 is about 15117.2517012849. The cubic root of 228531299 is about 611.3856335890.

The spelling of 228531299 in words is "two hundred twenty-eight million, five hundred thirty-one thousand, two hundred ninety-nine".