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10331430221 = 71475918603
BaseRepresentation
bin10011001111100110…
…10001110101001101
3222200000102000220202
421213303101311031
5132124321231341
64425102223245
7514010464550
oct114763216515
928600360822
1010331430221
114421906492
122003b84b25
13c88571228
14700198697
1540702979b
hex267cd1d4d

10331430221 has 4 divisors (see below), whose sum is σ = 11807348832. Its totient is φ = 8855511612.

The previous prime is 10331430209. The next prime is 10331430269. The reversal of 10331430221 is 12203413301.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12203413301 = 23530583187.

It is a cyclic number.

It is not a de Polignac number, because 10331430221 - 210 = 10331429197 is a prime.

It is a super-2 number, since 2×103314302212 (a number of 21 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 = 10331430193 and 10331430202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10331433221) 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 3 ways as a sum of consecutive naturals, for example, 737959295 + ... + 737959308.

It is an arithmetic number, because the mean of its divisors is an integer number (2951837208).

Almost surely, 210331430221 is an apocalyptic number.

It is an amenable number.

10331430221 is a deficient number, since it is larger than the sum of its proper divisors (1475918611).

10331430221 is an equidigital number, since it uses as much as digits as its factorization.

10331430221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475918610.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 10331430221 its reverse (12203413301), we get a palindrome (22534843522).

The spelling of 10331430221 in words is "ten billion, three hundred thirty-one million, four hundred thirty thousand, two hundred twenty-one".

Divisors: 1 7 1475918603 10331430221