381623361 has 32 divisors (see below), whose sum is σ = 635609088. Its totient is φ = 198616320.

The previous prime is 381623353. The next prime is 381623369. The reversal of 381623361 is 163326183.

It is an interprime number because it is at equal distance from previous prime (381623353) and next prime (381623369).

It is not a de Polignac number, because 381623361 - 2³ = 381623353 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (381623369) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6175 + ... + 28308.

It is an arithmetic number, because the mean of its divisors is an integer number (19862784).

Almost surely, 2^381623361 is an apocalyptic number.

381623361 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

381623361 is a deficient number, since it is larger than the sum of its proper divisors (253985727).

381623361 is a wasteful number, since it uses less digits than its factorization.

381623361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34541.

The product of its digits is 15552, while the sum is 33.

The square root of 381623361 is about 19535.1826456780. The cubic root of 381623361 is about 725.3456051813.

The spelling of 381623361 in words is "three hundred eighty-one million, six hundred twenty-three thousand, three hundred sixty-one".