381415681313 has 2 divisors, whose sum is σ = 381415681314. Its totient is φ = 381415681312.

The previous prime is 381415681291. The next prime is 381415681319. The reversal of 381415681313 is 313186514183.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331992611344 + 49423069969 = 576188^2 + 222313^2 .

It is a cyclic number.

It is not a de Polignac number, because 381415681313 - 2⁶ = 381415681249 is a prime.

It is not a weakly prime, because it can be changed into another prime (381415681319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190707840656 + 190707840657.

It is an arithmetic number, because the mean of its divisors is an integer number (190707840657).

Almost surely, 2^381415681313 is an apocalyptic number.

It is an amenable number.

381415681313 is a deficient number, since it is larger than the sum of its proper divisors (1).

381415681313 is an equidigital number, since it uses as much as digits as its factorization.

381415681313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 44.

The spelling of 381415681313 in words is "three hundred eighty-one billion, four hundred fifteen million, six hundred eighty-one thousand, three hundred thirteen".