1371305387 has 2 divisors, whose sum is σ = 1371305388. Its totient is φ = 1371305386.

The previous prime is 1371305321. The next prime is 1371305399. The reversal of 1371305387 is 7835031731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1371305387 - 2¹² = 1371301291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1371305387.

It is not a weakly prime, because it can be changed into another prime (1371301387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685652693 + 685652694.

It is an arithmetic number, because the mean of its divisors is an integer number (685652694).

Almost surely, 2^1371305387 is an apocalyptic number.

1371305387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371305387 is an equidigital number, since it uses as much as digits as its factorization.

1371305387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 1371305387 is about 37031.1407736786. The cubic root of 1371305387 is about 1110.9931827148.

The spelling of 1371305387 in words is "one billion, three hundred seventy-one million, three hundred five thousand, three hundred eighty-seven".