228247131 has 8 divisors (see below), whose sum is σ = 347805184. Its totient is φ = 130426920.

The previous prime is 228247121. The next prime is 228247183. The reversal of 228247131 is 131742822.

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

It is not a de Polignac number, because 228247131 - 2⁹ = 228246619 is a prime.

It is a super-2 number, since 2×228247131² = 104193505619462322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228247121) 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, 5434435 + ... + 5434476.

It is an arithmetic number, because the mean of its divisors is an integer number (43475648).

Almost surely, 2^228247131 is an apocalyptic number.

228247131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

228247131 is a deficient number, since it is larger than the sum of its proper divisors (119558053).

228247131 is a wasteful number, since it uses less digits than its factorization.

228247131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10868921.

The product of its digits is 5376, while the sum is 30.

The square root of 228247131 is about 15107.8499793981. The cubic root of 228247131 is about 611.1321186522.

Adding to 228247131 its reverse (131742822), we get a palindrome (359989953).

The spelling of 228247131 in words is "two hundred twenty-eight million, two hundred forty-seven thousand, one hundred thirty-one".