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131031311301 = 32111323548599
BaseRepresentation
bin111101000001000010…
…0110010001111000101
3110112012210112021202200
41322002010302033011
54121323003430201
6140110035425113
712316035524562
oct1720204621705
9415183467680
10131031311301
115062a839620
122148a155199
13c4827557c7
1464b0447869
15361d67c386
hex1e821323c5

131031311301 has 12 divisors (see below), whose sum is σ = 206473581600. Its totient is φ = 79412915880.

The previous prime is 131031311287. The next prime is 131031311339. The reversal of 131031311301 is 103113130131.

131031311301 is a `hidden beast` number, since 1 + 310 + 313 + 11 + 30 + 1 = 666.

It is not a de Polignac number, because 131031311301 - 25 = 131031311269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031311381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 661774201 + ... + 661774398.

It is an arithmetic number, because the mean of its divisors is an integer number (17206131800).

Almost surely, 2131031311301 is an apocalyptic number.

131031311301 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131031311301 is a deficient number, since it is larger than the sum of its proper divisors (75442270299).

131031311301 is a wasteful number, since it uses less digits than its factorization.

131031311301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323548616 (or 1323548613 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

Adding to 131031311301 its reverse (103113130131), we get a palindrome (234144441432).

The spelling of 131031311301 in words is "one hundred thirty-one billion, thirty-one million, three hundred eleven thousand, three hundred one".

Divisors: 1 3 9 11 33 99 1323548599 3970645797 11911937391 14559034589 43677103767 131031311301