Search a number
-
+
23471812481 = 132377759581
BaseRepresentation
bin10101110111000001…
…110110111110000001
32020120210100121122012
4111313001312332001
5341032240444411
614441030222305
71460440054115
oct256701667601
966523317565
1023471812481
119a55254137
1246707b4995
1322a0a55250
1411c9427745
1592595b18b
hex577076f81

23471812481 has 8 divisors (see below), whose sum is σ = 25288003944. Its totient is φ = 21657144960.

The previous prime is 23471812477. The next prime is 23471812493. The reversal of 23471812481 is 18421817432.

It can be written as a sum of positive squares in 4 ways, for example, as 484704256 + 22987108225 = 22016^2 + 151615^2 .

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 23471812481 - 22 = 23471812477 is a prime.

It is a super-2 number, since 2×234718124812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23471812451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348890 + ... + 410691.

It is an arithmetic number, because the mean of its divisors is an integer number (3161000493).

Almost surely, 223471812481 is an apocalyptic number.

It is an amenable number.

23471812481 is a deficient number, since it is larger than the sum of its proper divisors (1816191463).

23471812481 is a wasteful number, since it uses less digits than its factorization.

23471812481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761971.

The product of its digits is 86016, while the sum is 41.

The spelling of 23471812481 in words is "twenty-three billion, four hundred seventy-one million, eight hundred twelve thousand, four hundred eighty-one".

Divisors: 1 13 2377 30901 759581 9874553 1805524037 23471812481