381237227 has 4 divisors (see below), whose sum is σ = 435699696. Its totient is φ = 326774760.

The previous prime is 381237221. The next prime is 381237239. The reversal of 381237227 is 722732183.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722732183 = 6229 ⋅116027.

It is a cyclic number.

It is not a de Polignac number, because 381237227 - 2²⁴ = 364460011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381237221) 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, 27231224 + ... + 27231237.

It is an arithmetic number, because the mean of its divisors is an integer number (108924924).

Almost surely, 2^381237227 is an apocalyptic number.

381237227 is a deficient number, since it is larger than the sum of its proper divisors (54462469).

381237227 is an equidigital number, since it uses as much as digits as its factorization.

381237227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54462468.

The product of its digits is 28224, while the sum is 35.

The square root of 381237227 is about 19525.2971040136. The cubic root of 381237227 is about 725.1008829889.

The spelling of 381237227 in words is "three hundred eighty-one million, two hundred thirty-seven thousand, two hundred twenty-seven".