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131202213020 = 2256560110651
BaseRepresentation
bin111101000110001000…
…0101110010010011100
3110112122201002222211222
41322030100232102130
54122200231304040
6140135022432512
712323212260404
oct1721420562234
9415581088758
10131202213020
115070825760a
1221517432738
13c4abc92398
1464c9013804
15362d689bb5
hex1e8c42e49c

131202213020 has 12 divisors (see below), whose sum is σ = 275524647384. Its totient is φ = 52480885200.

The previous prime is 131202213017. The next prime is 131202213031. The reversal of 131202213020 is 20312202131.

It is a self number, because there is not a number n which added to its sum of digits gives 131202213020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3280055306 + ... + 3280055345.

It is an arithmetic number, because the mean of its divisors is an integer number (22960387282).

Almost surely, 2131202213020 is an apocalyptic number.

131202213020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131202213020 is an abundant number, since it is smaller than the sum of its proper divisors (144322434364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131202213020 is a wasteful number, since it uses less digits than its factorization.

131202213020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6560110660 (or 6560110658 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 131202213020 its reverse (20312202131), we get a palindrome (151514415151).

The spelling of 131202213020 in words is "one hundred thirty-one billion, two hundred two million, two hundred thirteen thousand, twenty".

Divisors: 1 2 4 5 10 20 6560110651 13120221302 26240442604 32800553255 65601106510 131202213020