1227455231 has 4 divisors (see below), whose sum is σ = 1231644792. Its totient is φ = 1223265672.

The previous prime is 1227455221. The next prime is 1227455239. The reversal of 1227455231 is 1325547221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1325547221 = 89 ⋅14893789.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1227455231 is a prime.

It is a super-2 number, since 2×1227455231² = 3013292688218526722, 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 (1227455239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2094341 + ... + 2094926.

It is an arithmetic number, because the mean of its divisors is an integer number (307911198).

Almost surely, 2^1227455231 is an apocalyptic number.

1227455231 is a deficient number, since it is larger than the sum of its proper divisors (4189561).

1227455231 is an equidigital number, since it uses as much as digits as its factorization.

1227455231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4189560.

The product of its digits is 16800, while the sum is 32.

The square root of 1227455231 is about 35035.0571713534. The cubic root of 1227455231 is about 1070.7018515220.

The spelling of 1227455231 in words is "one billion, two hundred twenty-seven million, four hundred fifty-five thousand, two hundred thirty-one".