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131142585020 = 2256557129251
BaseRepresentation
bin111101000100010110…
…1010000101010111100
3110112111112220120121112
41322020231100222330
54122040000210040
6140125052421152
712321556403006
oct1721055205274
9415445816545
10131142585020
1150687630177
12214bb4777b8
13c49c815845
1464c1131376
15362830c365
hex1e88b50abc

131142585020 has 12 divisors (see below), whose sum is σ = 275399428584. Its totient is φ = 52457034000.

The previous prime is 131142584971. The next prime is 131142585031. The reversal of 131142585020 is 20585241131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3278564606 + ... + 3278564645.

It is an arithmetic number, because the mean of its divisors is an integer number (22949952382).

Almost surely, 2131142585020 is an apocalyptic number.

131142585020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131142585020 is an abundant number, since it is smaller than the sum of its proper divisors (144256843564).

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

131142585020 is a wasteful number, since it uses less digits than its factorization.

131142585020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6557129260 (or 6557129258 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The spelling of 131142585020 in words is "one hundred thirty-one billion, one hundred forty-two million, five hundred eighty-five thousand, twenty".

Divisors: 1 2 4 5 10 20 6557129251 13114258502 26228517004 32785646255 65571292510 131142585020