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23220031030 = 2578312731469
BaseRepresentation
bin10101101000000001…
…011000111000110110
32012221020120210102021
4111220001120320312
5340023311443110
614400033503354
71451262002320
oct255001307066
965836523367
1023220031030
119936113a99
124600411b5a
13226083aa41
1411a3c06610
1590d7c42da
hex568058e36

23220031030 has 64 divisors (see below), whose sum is σ = 48724623360. Its totient is φ = 7803057024.

The previous prime is 23220031019. The next prime is 23220031031. The reversal of 23220031030 is 3013002232.

It is a junction number, because it is equal to n+sod(n) for n = 23220030995 and 23220031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220031031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 722136 + ... + 753604.

It is an arithmetic number, because the mean of its divisors is an integer number (761322240).

Almost surely, 223220031030 is an apocalyptic number.

23220031030 is an abundant number, since it is smaller than the sum of its proper divisors (25504592330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23220031030 is a wasteful number, since it uses less digits than its factorization.

23220031030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31693.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 23220031030 its reverse (3013002232), we get a palindrome (26233033262).

The spelling of 23220031030 in words is "twenty-three billion, two hundred twenty million, thirty-one thousand, thirty".

Divisors: 1 2 5 7 10 14 35 70 83 127 166 254 415 581 635 830 889 1162 1270 1778 2905 4445 5810 8890 10541 21082 31469 52705 62938 73787 105410 147574 157345 220283 314690 368935 440566 737870 1101415 2202830 2611927 3996563 5223854 7993126 13059635 18283489 19982815 26119270 27975941 36566978 39965630 55951882 91417445 139879705 182834890 279759410 331714729 663429458 1658573645 2322003103 3317147290 4644006206 11610015515 23220031030