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131031262230 = 235111013931331
BaseRepresentation
bin111101000001000010…
…0100110010000010110
3110112012210102210110020
41322002010212100112
54121323000342410
6140110034410010
712316035231531
oct1720204462026
9415183383406
10131031262230
115062a805770
122148a130906
13c48273937b
1464b0433a18
15361d66ca70
hex1e82126416

131031262230 has 64 divisors (see below), whose sum is σ = 346460426496. Its totient is φ = 31450640000.

The previous prime is 131031262213. The next prime is 131031262261. The reversal of 131031262230 is 32262130131.

It is a self number, because there is not a number n which added to its sum of digits gives 131031262230.

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, 1932336 + ... + 1998995.

It is an arithmetic number, because the mean of its divisors is an integer number (5413444164).

Almost surely, 2131031262230 is an apocalyptic number.

131031262230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131031262230 is an abundant number, since it is smaller than the sum of its proper divisors (215429164266).

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

131031262230 is a wasteful number, since it uses less digits than its factorization.

131031262230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931453.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 131031262230 its reverse (32262130131), we get a palindrome (163293392361).

The spelling of 131031262230 in words is "one hundred thirty-one billion, thirty-one million, two hundred sixty-two thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 101 110 165 202 303 330 505 606 1010 1111 1515 2222 3030 3333 5555 6666 11110 16665 33330 3931331 7862662 11793993 19656655 23587986 39313310 43244641 58969965 86489282 117939930 129733923 216223205 259467846 397064431 432446410 648669615 794128862 1191193293 1297339230 1985322155 2382386586 3970644310 4367708741 5955966465 8735417482 11911932930 13103126223 21838543705 26206252446 43677087410 65515631115 131031262230