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131031111301 = 196896374279
BaseRepresentation
bin111101000001000010…
…0000001011010000101
3110112012210011010102021
41322002010001122011
54121322431030201
6140110031243141
712316034032516
oct1720204013205
9415183133367
10131031111301
115062a712332
122148a0794b1
13c4826b576c
1464b03d4a0d
15361d63cea1
hex1e82101685

131031111301 has 4 divisors (see below), whose sum is σ = 137927485600. Its totient is φ = 124134737004.

The previous prime is 131031111257. The next prime is 131031111317. The reversal of 131031111301 is 103111130131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131031111301 - 27 = 131031111173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031112301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3448187121 + ... + 3448187158.

It is an arithmetic number, because the mean of its divisors is an integer number (34481871400).

Almost surely, 2131031111301 is an apocalyptic number.

It is an amenable number.

131031111301 is a deficient number, since it is larger than the sum of its proper divisors (6896374299).

131031111301 is an equidigital number, since it uses as much as digits as its factorization.

131031111301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6896374298.

The product of its (nonzero) digits is 27, while the sum is 16.

Adding to 131031111301 its reverse (103111130131), we get a palindrome (234142241432).

The spelling of 131031111301 in words is "one hundred thirty-one billion, thirty-one million, one hundred eleven thousand, three hundred one".

Divisors: 1 19 6896374279 131031111301