228162431 has 8 divisors (see below), whose sum is σ = 274481280. Its totient is φ = 185274648.

The previous prime is 228162421. The next prime is 228162437. The reversal of 228162431 is 134261822.

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 228162431 - 2⁶ = 228162367 is a prime.

It is a super-2 number, since 2×228162431² = 104116189839659522, 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 = 228162394 and 228162403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228162437) 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, 857621 + ... + 857886.

It is an arithmetic number, because the mean of its divisors is an integer number (34310160).

Almost surely, 2^228162431 is an apocalyptic number.

228162431 is a deficient number, since it is larger than the sum of its proper divisors (46318849).

228162431 is a wasteful number, since it uses less digits than its factorization.

228162431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715533.

The product of its digits is 4608, while the sum is 29.

The square root of 228162431 is about 15105.0465408088. The cubic root of 228162431 is about 611.0565144968.

The spelling of 228162431 in words is "two hundred twenty-eight million, one hundred sixty-two thousand, four hundred thirty-one".