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19031 is a prime number
BaseRepresentation
bin100101001010111
3222002212
410221113
51102111
6224035
7106325
oct45127
928085
1019031
1113331
12b01b
13887c
146d15
15598b
hex4a57

19031 has 2 divisors, whose sum is σ = 19032. Its totient is φ = 19030.

The previous prime is 19013. The next prime is 19037. The reversal of 19031 is 13091.

19031 is nontrivially palindromic in base 11.

Together with previous prime (19013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19031 - 214 = 2647 is a prime.

It is a super-2 number, since 2×190312 = 724357922, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 18997 and 19015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9515 + 9516.

It is an arithmetic number, because the mean of its divisors is an integer number (9516).

219031 is an apocalyptic number.

19031 is a deficient number, since it is larger than the sum of its proper divisors (1).

19031 is an equidigital number, since it uses as much as digits as its factorization.

19031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 19031 is about 137.9528905098. The cubic root of 19031 is about 26.6985209615.

The spelling of 19031 in words is "nineteen thousand, thirty-one".