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319015380 = 22355316923
BaseRepresentation
bin10011000000111…
…100100111010100
3211020021122211110
4103000330213110
51123131443010
651353335020
710622404665
oct2300744724
9736248743
10319015380
11154091a82
128aa07470
1351127cc8
143052336c
151d018120
hex1303c9d4

319015380 has 24 divisors (see below), whose sum is σ = 893243232. Its totient is φ = 85070752.

The previous prime is 319015379. The next prime is 319015381. The reversal of 319015380 is 83510913.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (319015379) and next prime (319015381).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319015381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2658402 + ... + 2658521.

It is an arithmetic number, because the mean of its divisors is an integer number (37218468).

Almost surely, 2319015380 is an apocalyptic number.

319015380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

319015380 is an abundant number, since it is smaller than the sum of its proper divisors (574227852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

319015380 is a wasteful number, since it uses less digits than its factorization.

319015380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5316935 (or 5316933 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 319015380 is about 17861.0016516432. The cubic root of 319015380 is about 683.2881260330.

The spelling of 319015380 in words is "three hundred nineteen million, fifteen thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 5316923 10633846 15950769 21267692 26584615 31901538 53169230 63803076 79753845 106338460 159507690 319015380