Search a number
-
+
330131230001021 = 376722787632423
BaseRepresentation
bin100101100010000001010101…
…0101100011000011101111101
31121021220020102001001010011102
41023010002222230120131331
5321232332224340013041
63130044105433502445
7126352123430603411
oct11304025254303575
91537806361033142
10330131230001021
119620a960917679
1231039788b71a25
131122931a4b5637
145b7461878ad41
15282770e46109b
hex12c40aab1877d

330131230001021 has 4 divisors (see below), whose sum is σ = 330131321400672. Its totient is φ = 330131138601372.

The previous prime is 330131230001009. The next prime is 330131230001119. The reversal of 330131230001021 is 120100032131033.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-330131230001021 is a prime.

It is a super-2 number, since 2×3301312300010212 (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 330131230000984 and 330131230001002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330131230003021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40048985 + ... + 47583438.

It is an arithmetic number, because the mean of its divisors is an integer number (82532830350168).

Almost surely, 2330131230001021 is an apocalyptic number.

It is an amenable number.

330131230001021 is a deficient number, since it is larger than the sum of its proper divisors (91399651).

330131230001021 is an equidigital number, since it uses as much as digits as its factorization.

330131230001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91399650.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 330131230001021 its reverse (120100032131033), we get a palindrome (450231262132054).

The spelling of 330131230001021 in words is "three hundred thirty trillion, one hundred thirty-one billion, two hundred thirty million, one thousand, twenty-one".

Divisors: 1 3767227 87632423 330131230001021