228335931 has 12 divisors (see below), whose sum is σ = 330162352. Its totient is φ = 152065296.

The previous prime is 228335909. The next prime is 228335951. The reversal of 228335931 is 139533822.

228335931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228335931 - 2⁷ = 228335803 is a prime.

It is a super-2 number, since 2×228335931² = 104274594771273522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228335951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3751 + ... + 21696.

Almost surely, 2^228335931 is an apocalyptic number.

228335931 is a deficient number, since it is larger than the sum of its proper divisors (101826421).

228335931 is a wasteful number, since it uses less digits than its factorization.

228335931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26450 (or 26447 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 228335931 is about 15110.7885631426. The cubic root of 228335931 is about 611.2113624316.

The spelling of 228335931 in words is "two hundred twenty-eight million, three hundred thirty-five thousand, nine hundred thirty-one".