Search a number
-
+
144133531 = 1761913697
BaseRepresentation
bin10001001011101…
…00110110011011
3101001012202000221
420211310312123
5243344233111
622145140511
73400054243
oct1045646633
9331182027
10144133531
11743a5723
124032a737
1323b26919
14151dcb23
15c9c1371
hex8974d9b

144133531 has 8 divisors (see below), whose sum is σ = 152869680. Its totient is φ = 135426048.

The previous prime is 144133529. The next prime is 144133543. The reversal of 144133531 is 135331441.

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 144133531 - 21 = 144133529 is a prime.

It is a super-2 number, since 2×1441335312 = 41548949517055922, 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 = 144133496 and 144133505.

It is not an unprimeable number, because it can be changed into a prime (144133501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3675 + ... + 17371.

It is an arithmetic number, because the mean of its divisors is an integer number (19108710).

Almost surely, 2144133531 is an apocalyptic number.

144133531 is a deficient number, since it is larger than the sum of its proper divisors (8736149).

144133531 is a wasteful number, since it uses less digits than its factorization.

144133531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14333.

The product of its digits is 2160, while the sum is 25.

The square root of 144133531 is about 12005.5625024403. The cubic root of 144133531 is about 524.3102427794.

Adding to 144133531 its reverse (135331441), we get a palindrome (279464972).

The spelling of 144133531 in words is "one hundred forty-four million, one hundred thirty-three thousand, five hundred thirty-one".

Divisors: 1 17 619 10523 13697 232849 8478443 144133531