227431989 has 8 divisors (see below), whose sum is σ = 336936320. Its totient is φ = 151621308.

The previous prime is 227431979. The next prime is 227431993. The reversal of 227431989 is 989134722.

It is not a de Polignac number, because 227431989 - 2¹³ = 227423797 is a prime.

It is a super-2 number, since 2×227431989² = 103450619240992242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227431979) 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, 4211677 + ... + 4211730.

It is an arithmetic number, because the mean of its divisors is an integer number (42117040).

Almost surely, 2^227431989 is an apocalyptic number.

It is an amenable number.

227431989 is a deficient number, since it is larger than the sum of its proper divisors (109504331).

227431989 is an equidigital number, since it uses as much as digits as its factorization.

227431989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8423416 (or 8423410 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 227431989 is about 15080.8484177781. The cubic root of 227431989 is about 610.4037361273.

The spelling of 227431989 in words is "two hundred twenty-seven million, four hundred thirty-one thousand, nine hundred eighty-nine".