228732031 has 8 divisors (see below), whose sum is σ = 251816400. Its totient is φ = 206029440.

The previous prime is 228732029. The next prime is 228732041. The reversal of 228732031 is 130237822.

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 228732031 - 2¹ = 228732029 is a prime.

It is a super-2 number, since 2×228732031² = 104636684010769922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228732011) 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, 94186 + ... + 96583.

It is an arithmetic number, because the mean of its divisors is an integer number (31477050).

Almost surely, 2^228732031 is an apocalyptic number.

228732031 is a deficient number, since it is larger than the sum of its proper divisors (23084369).

228732031 is a wasteful number, since it uses less digits than its factorization.

228732031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190889.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 228732031 is about 15123.8894137718. The cubic root of 228732031 is about 611.5645860958.

Adding to 228732031 its reverse (130237822), we get a palindrome (358969853).

The spelling of 228732031 in words is "two hundred twenty-eight million, seven hundred thirty-two thousand, thirty-one".