228132131 has 8 divisors (see below), whose sum is σ = 239353728. Its totient is φ = 217152000.

The previous prime is 228132089. The next prime is 228132133. The reversal of 228132131 is 131231822.

It is a happy number.

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 228132131 - 2¹⁰ = 228131107 is a prime.

It is a super-2 number, since 2×228132131² = 104088538389202322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228132097 and 228132106.

It is not an unprimeable number, because it can be changed into a prime (228132133) 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, 58430 + ... + 62211.

It is an arithmetic number, because the mean of its divisors is an integer number (29919216).

Almost surely, 2^228132131 is an apocalyptic number.

228132131 is a deficient number, since it is larger than the sum of its proper divisors (11221597).

228132131 is a wasteful number, since it uses less digits than its factorization.

228132131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120733.

The product of its digits is 576, while the sum is 23.

The square root of 228132131 is about 15104.0435314521. The cubic root of 228132131 is about 611.0294638383.

Adding to 228132131 its reverse (131231822), we get a palindrome (359363953).

The spelling of 228132131 in words is "two hundred twenty-eight million, one hundred thirty-two thousand, one hundred thirty-one".