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20310223310 = 2513156232487
BaseRepresentation
bin10010111010100101…
…010110100111001110
31221102110021020121222
4102322211112213032
5313043404121220
613155210323342
71316210023016
oct227245264716
957373236558
1020310223310
118682656423
123b29a29552
131bb8a44b20
14da959ac46
157dd0e8e25
hex4ba9569ce

20310223310 has 16 divisors (see below), whose sum is σ = 39370586976. Its totient is φ = 7499159328.

The previous prime is 20310223309. The next prime is 20310223313. The reversal of 20310223310 is 1332201302.

20310223310 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×203102233102 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310223313) 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, 78116114 + ... + 78116373.

It is an arithmetic number, because the mean of its divisors is an integer number (2460661686).

Almost surely, 220310223310 is an apocalyptic number.

20310223310 is a deficient number, since it is larger than the sum of its proper divisors (19060363666).

20310223310 is a wasteful number, since it uses less digits than its factorization.

20310223310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156232507.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20310223310 its reverse (1332201302), we get a palindrome (21642424612).

The spelling of 20310223310 in words is "twenty billion, three hundred ten million, two hundred twenty-three thousand, three hundred ten".

Divisors: 1 2 5 10 13 26 65 130 156232487 312464974 781162435 1562324870 2031022331 4062044662 10155111655 20310223310