228131761 has 8 divisors (see below), whose sum is σ = 268015104. Its totient is φ = 191439120.

The previous prime is 228131753. The next prime is 228131767. The reversal of 228131761 is 167131822.

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 228131761 - 2³ = 228131753 is a prime.

It is a super-2 number, since 2×228131761² = 104088200753922242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228131767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797521 + ... + 797806.

It is an arithmetic number, because the mean of its divisors is an integer number (33501888).

Almost surely, 2^228131761 is an apocalyptic number.

It is an amenable number.

228131761 is a deficient number, since it is larger than the sum of its proper divisors (39883343).

228131761 is a wasteful number, since it uses less digits than its factorization.

228131761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595351.

The product of its digits is 4032, while the sum is 31.

The square root of 228131761 is about 15104.0312830714. The cubic root of 228131761 is about 611.0291335019.

The spelling of 228131761 in words is "two hundred twenty-eight million, one hundred thirty-one thousand, seven hundred sixty-one".