227731047 has 16 divisors (see below), whose sum is σ = 307320288. Its totient is φ = 149990400.

The previous prime is 227731039. The next prime is 227731051. The reversal of 227731047 is 740137722.

It is not a de Polignac number, because 227731047 - 2³ = 227731039 is a prime.

It is a super-2 number, since 2×227731047² = 103722859535432418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 227730999 and 227731017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227731087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125547 + ... + 127347.

It is an arithmetic number, because the mean of its divisors is an integer number (19207518).

Almost surely, 2^227731047 is an apocalyptic number.

227731047 is a deficient number, since it is larger than the sum of its proper divisors (79589241).

227731047 is a wasteful number, since it uses less digits than its factorization.

227731047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290.

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 227731047 is about 15090.7603188176. The cubic root of 227731047 is about 610.6711657704.

Adding to 227731047 its reverse (740137722), we get a palindrome (967868769).

The spelling of 227731047 in words is "two hundred twenty-seven million, seven hundred thirty-one thousand, forty-seven".