Search a number
-
+
19253031 = 372130973
BaseRepresentation
bin100100101110…
…0011100100111
31100020011012020
41021130130213
514412044111
61524354223
7322435200
oct111343447
940204166
1019253031
11a9600a6
126545973
133cb1435
1427b25a7
151a54906
hex125c727

19253031 has 12 divisors (see below), whose sum is σ = 29862072. Its totient is φ = 11001648.

The previous prime is 19252979. The next prime is 19253041. The reversal of 19253031 is 13035291.

It is a happy number.

It is not a de Polignac number, because 19253031 - 26 = 19252967 is a prime.

It is a super-2 number, since 2×192530312 = 741358405373922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19252992 and 19253010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19253041) 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 11 ways as a sum of consecutive naturals, for example, 65340 + ... + 65633.

It is an arithmetic number, because the mean of its divisors is an integer number (2488506).

Almost surely, 219253031 is an apocalyptic number.

19253031 is a deficient number, since it is larger than the sum of its proper divisors (10609041).

19253031 is a wasteful number, since it uses less digits than its factorization.

19253031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130990 (or 130983 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 19253031 is about 4387.8275946076. The cubic root of 19253031 is about 268.0194860340.

The spelling of 19253031 in words is "nineteen million, two hundred fifty-three thousand, thirty-one".

Divisors: 1 3 7 21 49 147 130973 392919 916811 2750433 6417677 19253031