1315407227 has 4 divisors (see below), whose sum is σ = 1319610120. Its totient is φ = 1311204336.

The previous prime is 1315407217. The next prime is 1315407251. The reversal of 1315407227 is 7227045131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7227045131 = 43 ⋅168070817.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315407227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1315407193 and 1315407202.

It is not an unprimeable number, because it can be changed into a prime (1315407217) 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, 2100977 + ... + 2101602.

It is an arithmetic number, because the mean of its divisors is an integer number (329902530).

Almost surely, 2^1315407227 is an apocalyptic number.

1315407227 is a deficient number, since it is larger than the sum of its proper divisors (4202893).

1315407227 is an equidigital number, since it uses as much as digits as its factorization.

1315407227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202892.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 1315407227 is about 36268.5432158503. The cubic root of 1315407227 is about 1095.6875860555.

The spelling of 1315407227 in words is "one billion, three hundred fifteen million, four hundred seven thousand, two hundred twenty-seven".