Search a number
-
+
31205541110241 = 3192334968203019
BaseRepresentation
bin1110001100001100110110…
…01100010110000111100001
311002111012221210222102201210
413012012123030112013201
513042232422011011431
6150211343325020333
76400345253634501
oct706063314260741
9132435853872653
1031205541110241
119a412174802a3
1235bba146b46a9
131454892a028c4
1479c4db78da01
15391adb1a4d46
hex1c619b3161e1

31205541110241 has 32 divisors (see below), whose sum is σ = 45832429440000. Its totient is φ = 18797843009088.

The previous prime is 31205541110221. The next prime is 31205541110281. The reversal of 31205541110241 is 14201114550213.

It is not a de Polignac number, because 31205541110241 - 210 = 31205541109217 is a prime.

It is a super-2 number, since 2×312055411102412 (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31205541110199 and 31205541110208.

It is not an unprimeable number, because it can be changed into a prime (31205541110201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33643971 + ... + 34559048.

It is an arithmetic number, because the mean of its divisors is an integer number (1432263420000).

Almost surely, 231205541110241 is an apocalyptic number.

It is an amenable number.

31205541110241 is a deficient number, since it is larger than the sum of its proper divisors (14626888329759).

31205541110241 is a wasteful number, since it uses less digits than its factorization.

31205541110241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68203413.

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 31205541110241 its reverse (14201114550213), we get a palindrome (45406655660454).

The spelling of 31205541110241 in words is "thirty-one trillion, two hundred five billion, five hundred forty-one million, one hundred ten thousand, two hundred forty-one".

Divisors: 1 3 19 23 57 69 349 437 1047 1311 6631 8027 19893 24081 152513 457539 68203019 204609057 1295857361 1568669437 3887572083 4706008311 23802853631 29804719303 71408560893 89414157909 452254218989 547465633513 1356762656967 1642396900539 10401847036747 31205541110241