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80313405 = 3531172717
BaseRepresentation
bin1001100100101…
…11110000111101
312121010100021120
410302113300331
5131030012110
611545221153
71663436604
oct462276075
9177110246
1080313405
1141375717
1222a917b9
131383cc33
14a948a3b
1570b6870
hex4c97c3d

80313405 has 16 divisors (see below), whose sum is σ = 132647424. Its totient is φ = 41451840.

The previous prime is 80313397. The next prime is 80313407. The reversal of 80313405 is 50431308.

It is not a de Polignac number, because 80313405 - 23 = 80313397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80313407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85894 + ... + 86823.

It is an arithmetic number, because the mean of its divisors is an integer number (8290464).

Almost surely, 280313405 is an apocalyptic number.

It is an amenable number.

80313405 is a deficient number, since it is larger than the sum of its proper divisors (52334019).

80313405 is a wasteful number, since it uses less digits than its factorization.

80313405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172756.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 80313405 is about 8961.7746568411. The cubic root of 80313405 is about 431.4488803326.

The spelling of 80313405 in words is "eighty million, three hundred thirteen thousand, four hundred five".

Divisors: 1 3 5 15 31 93 155 465 172717 518151 863585 2590755 5354227 16062681 26771135 80313405