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14920331 = 31481301
BaseRepresentation
bin111000111010…
…101010001011
31001002000211212
4320322222023
512304422311
61251443335
7240551336
oct70725213
931060755
1014920331
118470958
124bb654b
1331252ca
141da561d
15149ac8b
hexe3aa8b

14920331 has 4 divisors (see below), whose sum is σ = 15401664. Its totient is φ = 14439000.

The previous prime is 14920327. The next prime is 14920337. The reversal of 14920331 is 13302941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13302941 = 61218081.

It is a cyclic number.

It is not a de Polignac number, because 14920331 - 22 = 14920327 is a prime.

It is a super-2 number, since 2×149203312 = 445232554299122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14920297 and 14920306.

It is not an unprimeable number, because it can be changed into a prime (14920337) 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 3 ways as a sum of consecutive naturals, for example, 240620 + ... + 240681.

It is an arithmetic number, because the mean of its divisors is an integer number (3850416).

Almost surely, 214920331 is an apocalyptic number.

14920331 is a deficient number, since it is larger than the sum of its proper divisors (481333).

14920331 is an equidigital number, since it uses as much as digits as its factorization.

14920331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481332.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 14920331 is about 3862.6844292538. The cubic root of 14920331 is about 246.1838084697.

It can be divided in two parts, 14920 and 331, that added together give a palindrome (15251).

The spelling of 14920331 in words is "fourteen million, nine hundred twenty thousand, three hundred thirty-one".

Divisors: 1 31 481301 14920331