381712013 has 2 divisors, whose sum is σ = 381712014. Its totient is φ = 381712012.

The previous prime is 381711991. The next prime is 381712043. The reversal of 381712013 is 310217183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379392484 + 2319529 = 19478^2 + 1523^2 .

It is a cyclic number.

It is not a de Polignac number, because 381712013 - 2²⁴ = 364934797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381712043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190856006 + 190856007.

It is an arithmetic number, because the mean of its divisors is an integer number (190856007).

Almost surely, 2^381712013 is an apocalyptic number.

It is an amenable number.

381712013 is a deficient number, since it is larger than the sum of its proper divisors (1).

381712013 is an equidigital number, since it uses as much as digits as its factorization.

381712013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 381712013 is about 19537.4515482445. The cubic root of 381712013 is about 725.4017673266.

Adding to 381712013 its reverse (310217183), we get a palindrome (691929196).

The spelling of 381712013 in words is "three hundred eighty-one million, seven hundred twelve thousand, thirteen".