Search a number
-
+
121310030031 = 3139290911343
BaseRepresentation
bin111000011111010100…
…1000010100011001111
3102121010022020000212020
41300332221002203033
53441420331430111
6131421250541223
711523114145641
oct1607651024317
9377108200766
10121310030031
11474a1393073
121b616597813
13b593724778
145c2b318891
15324eec7906
hex1c3ea428cf

121310030031 has 8 divisors (see below), whose sum is σ = 162910352640. Its totient is φ = 80291530392.

The previous prime is 121310030011. The next prime is 121310030081. The reversal of 121310030031 is 130030013121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121310030031 - 27 = 121310029903 is a prime.

It is a super-2 number, since 2×1213100300312 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121310030011) 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, 145455255 + ... + 145456088.

It is an arithmetic number, because the mean of its divisors is an integer number (20363794080).

Almost surely, 2121310030031 is an apocalyptic number.

121310030031 is a deficient number, since it is larger than the sum of its proper divisors (41600322609).

121310030031 is a wasteful number, since it uses less digits than its factorization.

121310030031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290911485.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 121310030031 its reverse (130030013121), we get a palindrome (251340043152).

The spelling of 121310030031 in words is "one hundred twenty-one billion, three hundred ten million, thirty thousand, thirty-one".

Divisors: 1 3 139 417 290911343 872734029 40436676677 121310030031