1388316227 has 4 divisors (see below), whose sum is σ = 1388983536. Its totient is φ = 1387648920.

The previous prime is 1388316199. The next prime is 1388316233. The reversal of 1388316227 is 7226138831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7226138831 = 8839 ⋅817529.

It is a cyclic number.

It is not a de Polignac number, because 1388316227 - 2¹⁶ = 1388250691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1388316427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330524 + ... + 334697.

It is an arithmetic number, because the mean of its divisors is an integer number (347245884).

Almost surely, 2^1388316227 is an apocalyptic number.

1388316227 is a deficient number, since it is larger than the sum of its proper divisors (667309).

1388316227 is an equidigital number, since it uses as much as digits as its factorization.

1388316227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667308.

The product of its digits is 96768, while the sum is 41.

The square root of 1388316227 is about 37260.1157673993. The cubic root of 1388316227 is about 1115.5682188950.

The spelling of 1388316227 in words is "one billion, three hundred eighty-eight million, three hundred sixteen thousand, two hundred twenty-seven".