1381381711 has 2 divisors, whose sum is σ = 1381381712. Its totient is φ = 1381381710.

The previous prime is 1381381709. The next prime is 1381381739. The reversal of 1381381711 is 1171831831.

It is a weak prime.

It is an emirp because it is prime and its reverse (1171831831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1381381711 - 2¹ = 1381381709 is a prime.

Together with 1381381709, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1381381511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690690855 + 690690856.

It is an arithmetic number, because the mean of its divisors is an integer number (690690856).

Almost surely, 2^1381381711 is an apocalyptic number.

1381381711 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381381711 is an equidigital number, since it uses as much as digits as its factorization.

1381381711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 34.

The square root of 1381381711 is about 37166.9437941836. The cubic root of 1381381711 is about 1113.7077297980.

The spelling of 1381381711 in words is "one billion, three hundred eighty-one million, three hundred eighty-one thousand, seven hundred eleven".