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131000223 = 359373637
BaseRepresentation
bin1111100111011…
…10011110011111
3100010111111112010
413303232132133
5232014001343
620555442303
73150324564
oct763563637
9303444463
10131000223
1167a45452
1237a56393
13211a8b33
141358086b
15b779d33
hex7cee79f

131000223 has 8 divisors (see below), whose sum is σ = 174963888. Its totient is φ = 87185024.

The previous prime is 131000197. The next prime is 131000227. The reversal of 131000223 is 322000131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131000223 is a prime.

It is a super-2 number, since 2×1310002232 = 34322116852099458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131000199 and 131000208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35040 + ... + 38597.

It is an arithmetic number, because the mean of its divisors is an integer number (21870486).

Almost surely, 2131000223 is an apocalyptic number.

131000223 is a deficient number, since it is larger than the sum of its proper divisors (43963665).

131000223 is an equidigital number, since it uses as much as digits as its factorization.

131000223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74233.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 131000223 is about 11445.5328840557. The cubic root of 131000223 is about 507.8755959968.

Adding to 131000223 its reverse (322000131), we get a palindrome (453000354).

The spelling of 131000223 in words is "one hundred thirty-one million, two hundred twenty-three", and thus it is an aban number.

Divisors: 1 3 593 1779 73637 220911 43666741 131000223