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131031203230 = 2550326049941
BaseRepresentation
bin111101000001000010…
…0010111110110011110
3110112012210022210112001
41322002010113312132
54121322442000410
6140110033232514
712316034564524
oct1720204276636
9415183283461
10131031203230
115062a775404
122148a10273a
13c482718565
1464b041a314
15361d65a33a
hex1e82117d9e

131031203230 has 16 divisors (see below), whose sum is σ = 236325073824. Its totient is φ = 52308279520.

The previous prime is 131031203221. The next prime is 131031203239. The reversal of 131031203230 is 32302130131.

It is an interprime number because it is at equal distance from previous prime (131031203221) and next prime (131031203239).

It is a junction number, because it is equal to n+sod(n) for n = 131031203198 and 131031203207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031203239) 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 7 ways as a sum of consecutive naturals, for example, 13019941 + ... + 13030000.

It is an arithmetic number, because the mean of its divisors is an integer number (14770317114).

Almost surely, 2131031203230 is an apocalyptic number.

131031203230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131031203230 is a deficient number, since it is larger than the sum of its proper divisors (105293870594).

131031203230 is a wasteful number, since it uses less digits than its factorization.

131031203230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26050451.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 131031203230 its reverse (32302130131), we get a palindrome (163333333361).

The spelling of 131031203230 in words is "one hundred thirty-one billion, thirty-one million, two hundred three thousand, two hundred thirty".

Divisors: 1 2 5 10 503 1006 2515 5030 26049941 52099882 130249705 260499410 13103120323 26206240646 65515601615 131031203230