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11319911 = 55720323
BaseRepresentation
bin101011001011…
…101001100111
3210022002222222
4223023221213
510344214121
61042342555
7165134441
oct53135147
923262888
1011319911
1164318a9
12395aa5b
132464595
141709491
15ed90ab
hexacba67

11319911 has 4 divisors (see below), whose sum is σ = 11340792. Its totient is φ = 11299032.

The previous prime is 11319901. The next prime is 11319923. The reversal of 11319911 is 11991311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11991311 = 41292471.

It is a cyclic number.

It is not a de Polignac number, because 11319911 - 214 = 11303527 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 (11319901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9605 + ... + 10718.

It is an arithmetic number, because the mean of its divisors is an integer number (2835198).

Almost surely, 211319911 is an apocalyptic number.

11319911 is a deficient number, since it is larger than the sum of its proper divisors (20881).

11319911 is an equidigital number, since it uses as much as digits as its factorization.

11319911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20880.

The product of its digits is 243, while the sum is 26.

The square root of 11319911 is about 3364.5075419740. The cubic root of 11319911 is about 224.5334265699.

The spelling of 11319911 in words is "eleven million, three hundred nineteen thousand, nine hundred eleven".

Divisors: 1 557 20323 11319911