228894931 has 4 divisors (see below), whose sum is σ = 232030552. Its totient is φ = 225759312.

The previous prime is 228894907. The next prime is 228894937. The reversal of 228894931 is 139498822.

228894931 = 6174² + 6175² + ... + 6179².

228894931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 228894931 - 2⁷ = 228894803 is a prime.

It is a super-2 number, since 2×228894931² = 104785778874989522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228894937) 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, 1567701 + ... + 1567846.

It is an arithmetic number, because the mean of its divisors is an integer number (58007638).

Almost surely, 2^228894931 is an apocalyptic number.

228894931 is a deficient number, since it is larger than the sum of its proper divisors (3135621).

228894931 is an equidigital number, since it uses as much as digits as its factorization.

228894931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135620.

The product of its digits is 248832, while the sum is 46.

The square root of 228894931 is about 15129.2739746493. The cubic root of 228894931 is about 611.7097344450.

The spelling of 228894931 in words is "two hundred twenty-eight million, eight hundred ninety-four thousand, nine hundred thirty-one".