1227311089 has 9 divisors (see below), whose sum is σ = 1252800129. Its totient is φ = 1202332560.

The previous prime is 1227311083. The next prime is 1227311143. The reversal of 1227311089 is 9801137221.

The square root of 1227311089 is 35033.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 327791025 + 899520064 = 18105^2 + 29992^2 .

It is not a de Polignac number, because 1227311089 - 2³ = 1227311081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1227311081) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1856419 + ... + 1857079.

Almost surely, 2^1227311089 is an apocalyptic number.

1227311089 is the 35033-rd square number.

1227311089 is the 17517-th centered octagonal number.

It is an amenable number.

1227311089 is a deficient number, since it is larger than the sum of its proper divisors (25489040).

1227311089 is an frugal number, since it uses more digits than its factorization.

1227311089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The cubic root of 1227311089 is about 1070.6599384800.

The spelling of 1227311089 in words is "one billion, two hundred twenty-seven million, three hundred eleven thousand, eighty-nine".