228646031 has 6 divisors (see below), whose sum is σ = 229387032. Its totient is φ = 227907320.

The previous prime is 228646027. The next prime is 228646069. The reversal of 228646031 is 130646822.

It is not a de Polignac number, because 228646031 - 2² = 228646027 is a prime.

It is a super-2 number, since 2×228646031² = 104558014984105922, 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 (228646091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 150566 + ... + 152076.

It is an arithmetic number, because the mean of its divisors is an integer number (38231172).

Almost surely, 2^228646031 is an apocalyptic number.

228646031 is a deficient number, since it is larger than the sum of its proper divisors (741001).

228646031 is an frugal number, since it uses more digits than its factorization.

228646031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289 (or 1900 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 228646031 is about 15121.0459624988. The cubic root of 228646031 is about 611.4879299505.

The spelling of 228646031 in words is "two hundred twenty-eight million, six hundred forty-six thousand, thirty-one".