227042991 has 12 divisors (see below), whose sum is σ = 374801232. Its totient is φ = 129738816.

The previous prime is 227042983. The next prime is 227042993. The reversal of 227042991 is 199240722.

227042991 is a `hidden beast` number, since 227 + 0 + 429 + 9 + 1 = 666.

It is not a de Polignac number, because 227042991 - 2³ = 227042983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227042993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1801866 + ... + 1801991.

It is an arithmetic number, because the mean of its divisors is an integer number (31233436).

Almost surely, 2^227042991 is an apocalyptic number.

227042991 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

227042991 is a deficient number, since it is larger than the sum of its proper divisors (147758241).

227042991 is a wasteful number, since it uses less digits than its factorization.

227042991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603870 (or 3603867 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 227042991 is about 15067.9458122201. The cubic root of 227042991 is about 610.0555275082.

The spelling of 227042991 in words is "two hundred twenty-seven million, forty-two thousand, nine hundred ninety-one".