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311201 = 11191489
BaseRepresentation
bin1001011111110100001
3120210212222
41023332201
534424301
610400425
72434202
oct1137641
9523788
10311201
111a28a0
12130115
13ab857
14815a9
156231b
hex4bfa1

311201 has 8 divisors (see below), whose sum is σ = 357600. Its totient is φ = 267840.

The previous prime is 311197. The next prime is 311203. The reversal of 311201 is 102113.

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 311201 - 22 = 311197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536 + ... + 953.

It is an arithmetic number, because the mean of its divisors is an integer number (44700).

2311201 is an apocalyptic number.

It is an amenable number.

311201 is a deficient number, since it is larger than the sum of its proper divisors (46399).

311201 is a wasteful number, since it uses less digits than its factorization.

311201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 311201 is about 557.8539235320. The cubic root of 311201 is about 67.7662824025.

Adding to 311201 its reverse (102113), we get a palindrome (413314).

It can be divided in two parts, 311 and 201, that added together give a 9-th power (512 = 29).

The spelling of 311201 in words is "three hundred eleven thousand, two hundred one", and thus it is an iban number.

Divisors: 1 11 19 209 1489 16379 28291 311201