381275520347 has 2 divisors, whose sum is σ = 381275520348. Its totient is φ = 381275520346.

The previous prime is 381275520289. The next prime is 381275520371. The reversal of 381275520347 is 743025572183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381275520347 - 2¹⁴ = 381275503963 is a prime.

It is a super-2 number, since 2×381275520347² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (381275520377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190637760173 + 190637760174.

It is an arithmetic number, because the mean of its divisors is an integer number (190637760174).

Almost surely, 2^381275520347 is an apocalyptic number.

381275520347 is a deficient number, since it is larger than the sum of its proper divisors (1).

381275520347 is an equidigital number, since it uses as much as digits as its factorization.

381275520347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 381275520347 in words is "three hundred eighty-one billion, two hundred seventy-five million, five hundred twenty thousand, three hundred forty-seven".