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131222233230 = 235111487267413
BaseRepresentation
bin111101000110101110…
…1000110000010001110
3110112201002210010102020
41322031131012002032
54122220342430410
6140141015511010
712323544402354
oct1721535060216
9415632703366
10131222233230
1150718591040
1221522088466
13c4b3181a6a
1464cb9457d4
1536302e1a70
hex1e8d74608e

131222233230 has 64 divisors (see below), whose sum is σ = 343795995648. Its totient is φ = 31789938560.

The previous prime is 131222233187. The next prime is 131222233243. The reversal of 131222233230 is 32332222131.

It is a self number, because there is not a number n which added to its sum of digits gives 131222233230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 357004 + ... + 624416.

It is an arithmetic number, because the mean of its divisors is an integer number (5371812432).

Almost surely, 2131222233230 is an apocalyptic number.

131222233230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131222233230 is an abundant number, since it is smaller than the sum of its proper divisors (212573762418).

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

131222233230 is a wasteful number, since it uses less digits than its factorization.

131222233230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268921.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 131222233230 its reverse (32332222131), we get a palindrome (163554455361).

The spelling of 131222233230 in words is "one hundred thirty-one billion, two hundred twenty-two million, two hundred thirty-three thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 1487 2974 4461 7435 8922 14870 16357 22305 32714 44610 49071 81785 98142 163570 245355 267413 490710 534826 802239 1337065 1604478 2674130 2941543 4011195 5883086 8022390 8824629 14707715 17649258 29415430 44123145 88246290 397643131 795286262 1192929393 1988215655 2385858786 3976431310 4374074441 5964646965 8748148882 11929293930 13122223323 21870372205 26244446646 43740744410 65611116615 131222233230