228503413 has 4 divisors (see below), whose sum is σ = 238438368. Its totient is φ = 218568460.

The previous prime is 228503411. The next prime is 228503447. The reversal of 228503413 is 314305822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 314305822 = 2 ⋅157152911.

It is a cyclic number.

It is not a de Polignac number, because 228503413 - 2¹ = 228503411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228503411) 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 3 ways as a sum of consecutive naturals, for example, 4967443 + ... + 4967488.

It is an arithmetic number, because the mean of its divisors is an integer number (59609592).

Almost surely, 2^228503413 is an apocalyptic number.

228503413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

228503413 is a deficient number, since it is larger than the sum of its proper divisors (9934955).

228503413 is an equidigital number, since it uses as much as digits as its factorization.

228503413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9934954.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 228503413 is about 15116.3293494155. The cubic root of 228503413 is about 611.3607649410.

The spelling of 228503413 in words is "two hundred twenty-eight million, five hundred three thousand, four hundred thirteen".