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381019223 = 1329309171
BaseRepresentation
bin10110101101011…
…110010001010111
3222112221210010002
4112231132101113
51240020103343
6101450321515
712304416134
oct2655362127
9875853102
10381019223
11186091422
12a772929b
1360c27080
143886358b
15236b48b8
hex16b5e457

381019223 has 4 divisors (see below), whose sum is σ = 410328408. Its totient is φ = 351710040.

The previous prime is 381019211. The next prime is 381019241. The reversal of 381019223 is 322910183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322910183 = 433745751.

It is a cyclic number.

It is not a de Polignac number, because 381019223 - 24 = 381019207 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 (381019123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14654573 + ... + 14654598.

It is an arithmetic number, because the mean of its divisors is an integer number (102582102).

Almost surely, 2381019223 is an apocalyptic number.

381019223 is a deficient number, since it is larger than the sum of its proper divisors (29309185).

381019223 is a wasteful number, since it uses less digits than its factorization.

381019223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29309184.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 381019223 is about 19519.7137017939. The cubic root of 381019223 is about 724.9626444487.

The spelling of 381019223 in words is "three hundred eighty-one million, nineteen thousand, two hundred twenty-three".

Divisors: 1 13 29309171 381019223