381253123 has 2 divisors, whose sum is σ = 381253124. Its totient is φ = 381253122.

The previous prime is 381253121. The next prime is 381253133. The reversal of 381253123 is 321352183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381253123 - 2¹ = 381253121 is a prime.

Together with 381253121, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 381253091 and 381253100.

It is not a weakly prime, because it can be changed into another prime (381253121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190626561 + 190626562.

It is an arithmetic number, because the mean of its divisors is an integer number (190626562).

Almost surely, 2^381253123 is an apocalyptic number.

381253123 is a deficient number, since it is larger than the sum of its proper divisors (1).

381253123 is an equidigital number, since it uses as much as digits as its factorization.

381253123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 381253123 is about 19525.7041614381. The cubic root of 381253123 is about 725.1109607416.

The spelling of 381253123 in words is "three hundred eighty-one million, two hundred fifty-three thousand, one hundred twenty-three".