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388041311 = 7371498229
BaseRepresentation
bin10111001000010…
…000101001011111
31000001011112121102
4113020100221133
51243314310221
6102301023315
712421203530
oct2710205137
91001145542
10388041311
1118a0481a9
12a9b54b3b
1362515358
1439770687
152410030b
hex17210a5f

388041311 has 8 divisors (see below), whose sum is σ = 455461920. Its totient is φ = 323617248.

The previous prime is 388041307. The next prime is 388041323. The reversal of 388041311 is 113140883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 388041311 - 22 = 388041307 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 (388041301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748856 + ... + 749373.

It is an arithmetic number, because the mean of its divisors is an integer number (56932740).

Almost surely, 2388041311 is an apocalyptic number.

388041311 is a deficient number, since it is larger than the sum of its proper divisors (67420609).

388041311 is a wasteful number, since it uses less digits than its factorization.

388041311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498273.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 388041311 is about 19698.7641998172. The cubic root of 388041311 is about 729.3891875629.

The spelling of 388041311 in words is "three hundred eighty-eight million, forty-one thousand, three hundred eleven".

Divisors: 1 7 37 259 1498229 10487603 55434473 388041311