228814831 has 4 divisors (see below), whose sum is σ = 261502672. Its totient is φ = 196126992.

The previous prime is 228814823. The next prime is 228814837. The reversal of 228814831 is 138418822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228814831 - 2³ = 228814823 is a prime.

It is a super-2 number, since 2×228814831² = 104712453771117122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228814837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16343910 + ... + 16343923.

It is an arithmetic number, because the mean of its divisors is an integer number (65375668).

Almost surely, 2^228814831 is an apocalyptic number.

228814831 is a deficient number, since it is larger than the sum of its proper divisors (32687841).

228814831 is an equidigital number, since it uses as much as digits as its factorization.

228814831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32687840.

The product of its digits is 24576, while the sum is 37.

The square root of 228814831 is about 15126.6265571673. The cubic root of 228814831 is about 611.6383717662.

The spelling of 228814831 in words is "two hundred twenty-eight million, eight hundred fourteen thousand, eight hundred thirty-one".