381741931 has 2 divisors, whose sum is σ = 381741932. Its totient is φ = 381741930.

The previous prime is 381741929. The next prime is 381741961. The reversal of 381741931 is 139147183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381741931 - 2¹ = 381741929 is a prime.

It is a super-2 number, since 2×381741931² = 291453803767217522, which contains 22 as substring.

Together with 381741929, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (381741961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190870965 + 190870966.

It is an arithmetic number, because the mean of its divisors is an integer number (190870966).

Almost surely, 2^381741931 is an apocalyptic number.

381741931 is a deficient number, since it is larger than the sum of its proper divisors (1).

381741931 is an equidigital number, since it uses as much as digits as its factorization.

381741931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 381741931 is about 19538.2171909312. The cubic root of 381741931 is about 725.4207187895.

The spelling of 381741931 in words is "three hundred eighty-one million, seven hundred forty-one thousand, nine hundred thirty-one".