381264071 has 4 divisors (see below), whose sum is σ = 393562944. Its totient is φ = 368965200.

The previous prime is 381264061. The next prime is 381264097. The reversal of 381264071 is 170462183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170462183 = 1597 ⋅106739.

It is a cyclic number.

It is not a de Polignac number, because 381264071 - 2⁶ = 381264007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381264001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6149390 + ... + 6149451.

It is an arithmetic number, because the mean of its divisors is an integer number (98390736).

Almost surely, 2^381264071 is an apocalyptic number.

381264071 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

381264071 is a deficient number, since it is larger than the sum of its proper divisors (12298873).

381264071 is a wasteful number, since it uses less digits than its factorization.

381264071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12298872.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 381264071 is about 19525.9845078296. The cubic root of 381264071 is about 725.1179013963.

The spelling of 381264071 in words is "three hundred eighty-one million, two hundred sixty-four thousand, seventy-one".