Search a number
-
+
3101793738481 = 239273692
BaseRepresentation
bin101101001000110001010…
…100000101111011110001
3101222112021100010222022101
4231020301110011323301
5401304433144112411
610332535552340401
7440045224520614
oct55106124057361
911875240128271
103101793738481
11a9651077a079
12421194544701
13196661b49659
14aa1b028017b
1555a4119b8c1
hex2d231505ef1

3101793738481 has 9 divisors (see below), whose sum is σ = 3115249007691. Its totient is φ = 3088396358544.

The previous prime is 3101793738473. The next prime is 3101793738487. The reversal of 3101793738481 is 1848373971013.

The square root of 3101793738481 is 1761191.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2864078984881 + 237714753600 = 1692359^2 + 487560^2 .

It is not a de Polignac number, because 3101793738481 - 23 = 3101793738473 is a prime.

It is a super-2 number, since 2×31017937384812 (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3101793738487) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 420920965 + ... + 420928333.

Almost surely, 23101793738481 is an apocalyptic number.

3101793738481 is the 1761191-st square number.

3101793738481 is the 880596-th centered octagonal number.

It is an amenable number.

3101793738481 is a deficient number, since it is larger than the sum of its proper divisors (13455269210).

3101793738481 is an frugal number, since it uses more digits than its factorization.

3101793738481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15216 (or 7608 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 3101793738481 in words is "three trillion, one hundred one billion, seven hundred ninety-three million, seven hundred thirty-eight thousand, four hundred eighty-one".

Divisors: 1 239 7369 57121 1761191 54302161 420924649 12978216479 3101793738481