381315101 has 2 divisors, whose sum is σ = 381315102. Its totient is φ = 381315100.

The previous prime is 381315079. The next prime is 381315107. The reversal of 381315101 is 101513183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199092100 + 182223001 = 14110^2 + 13499^2 .

It is a cyclic number.

It is not a de Polignac number, because 381315101 - 2⁶ = 381315037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381315107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190657550 + 190657551.

It is an arithmetic number, because the mean of its divisors is an integer number (190657551).

Almost surely, 2^381315101 is an apocalyptic number.

It is an amenable number.

381315101 is a deficient number, since it is larger than the sum of its proper divisors (1).

381315101 is an equidigital number, since it uses as much as digits as its factorization.

381315101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 381315101 is about 19527.2911843911. The cubic root of 381315101 is about 725.1502509046.

Adding to 381315101 its reverse (101513183), we get a palindrome (482828284).

The spelling of 381315101 in words is "three hundred eighty-one million, three hundred fifteen thousand, one hundred one".