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131152100231 = 223219587549
BaseRepresentation
bin111101000100101000…
…1100011101110000111
3110112112012211000000202
41322021101203232013
54122044414201411
6140130032401115
712322033313105
oct1721121435607
9415465730022
10131152100231
1150691a3a089
12215026a619b
13c4a1797849
1464c24cac75
15362908b83b
hex1e89463b87

131152100231 has 4 divisors (see below), whose sum is σ = 131152911000. Its totient is φ = 131151289464.

The previous prime is 131152100207. The next prime is 131152100239. The reversal of 131152100231 is 132001251131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 131152100231 - 210 = 131152099207 is a prime.

It is a super-2 number, since 2×1311521002312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131152100239) 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 3 ways as a sum of consecutive naturals, for example, 70556 + ... + 516993.

It is an arithmetic number, because the mean of its divisors is an integer number (32788227750).

Almost surely, 2131152100231 is an apocalyptic number.

131152100231 is a deficient number, since it is larger than the sum of its proper divisors (810769).

131152100231 is an equidigital number, since it uses as much as digits as its factorization.

131152100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810768.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 131152100231 its reverse (132001251131), we get a palindrome (263153351362).

The spelling of 131152100231 in words is "one hundred thirty-one billion, one hundred fifty-two million, one hundred thousand, two hundred thirty-one".

Divisors: 1 223219 587549 131152100231