228658031 has 8 divisors (see below), whose sum is σ = 261576480. Its totient is φ = 195802848.

The previous prime is 228658021. The next prime is 228658033. The reversal of 228658031 is 130856822.

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

It is a cyclic number.

It is not a de Polignac number, because 228658031 - 2⁶ = 228657967 is a prime.

It is a super-2 number, since 2×228658031² = 104568990281593922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228657982 and 228658000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228658033) 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, 7796 + ... + 22761.

It is an arithmetic number, because the mean of its divisors is an integer number (32697060).

Almost surely, 2^228658031 is an apocalyptic number.

228658031 is a deficient number, since it is larger than the sum of its proper divisors (32918449).

228658031 is a wasteful number, since it uses less digits than its factorization.

228658031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31633.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 228658031 is about 15121.4427552400. The cubic root of 228658031 is about 611.4986273106.

The spelling of 228658031 in words is "two hundred twenty-eight million, six hundred fifty-eight thousand, thirty-one".