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10303321021 = 71471903003
BaseRepresentation
bin10011001100010000…
…00011001110111101
3222121001111221100021
421212020003032331
5132100122233041
64422215532141
7513216532540
oct114610031675
928531457307
1010303321021
114407a57644
121bb668a051
13c827aba76
146da55c857
15404825cd1
hex2662033bd

10303321021 has 4 divisors (see below), whose sum is σ = 11775224032. Its totient is φ = 8831418012.

The previous prime is 10303321003. The next prime is 10303321073. The reversal of 10303321021 is 12012330301.

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: 12012330301 = 56941210961.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10303321021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10303320986 and 10303321004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10303321321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 735951495 + ... + 735951508.

It is an arithmetic number, because the mean of its divisors is an integer number (2943806008).

Almost surely, 210303321021 is an apocalyptic number.

It is an amenable number.

10303321021 is a deficient number, since it is larger than the sum of its proper divisors (1471903011).

10303321021 is an equidigital number, since it uses as much as digits as its factorization.

10303321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471903010.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 10303321021 its reverse (12012330301), we get a palindrome (22315651322).

The spelling of 10303321021 in words is "ten billion, three hundred three million, three hundred twenty-one thousand, twenty-one".

Divisors: 1 7 1471903003 10303321021