228351587 has 2 divisors, whose sum is σ = 228351588. Its totient is φ = 228351586.

The previous prime is 228351583. The next prime is 228351631. The reversal of 228351587 is 785153822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228351587 - 2² = 228351583 is a prime.

It is not a weakly prime, because it can be changed into another prime (228351581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114175793 + 114175794.

It is an arithmetic number, because the mean of its divisors is an integer number (114175794).

Almost surely, 2^228351587 is an apocalyptic number.

228351587 is a deficient number, since it is larger than the sum of its proper divisors (1).

228351587 is an equidigital number, since it uses as much as digits as its factorization.

228351587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 41.

The square root of 228351587 is about 15111.3065947323. The cubic root of 228351587 is about 611.2253314791.

The spelling of 228351587 in words is "two hundred twenty-eight million, three hundred fifty-one thousand, five hundred eighty-seven".