Search a number
-
+
31052423 = 673591291
BaseRepresentation
bin111011001110…
…1001010000111
32011102121220202
41312131022013
530422134143
63025321115
7524640563
oct166351207
964377822
1031052423
111658a166
12a49619b
13658301c
1441a46a3
152ad5ab8
hex1d9d287

31052423 has 8 divisors (see below), whose sum is σ = 31628160. Its totient is φ = 30480120.

The previous prime is 31052419. The next prime is 31052429. The reversal of 31052423 is 32425013.

It is a happy number.

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 31052423 - 22 = 31052419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31052395 and 31052404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31052429) 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, 23408 + ... + 24698.

It is an arithmetic number, because the mean of its divisors is an integer number (3953520).

Almost surely, 231052423 is an apocalyptic number.

31052423 is a deficient number, since it is larger than the sum of its proper divisors (575737).

31052423 is a wasteful number, since it uses less digits than its factorization.

31052423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 31052423 is about 5572.4700986187. The cubic root of 31052423 is about 314.3150414290.

Adding to 31052423 its reverse (32425013), we get a palindrome (63477436).

The spelling of 31052423 in words is "thirty-one million, fifty-two thousand, four hundred twenty-three".

Divisors: 1 67 359 1291 24053 86497 463469 31052423