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131272422 = 23181120877
BaseRepresentation
bin1111101001100…
…00111011100110
3100011000022220120
413310300323212
5232101204142
621005342410
73152540301
oct764607346
9304008816
10131272422
1168110a06
1237b67a06
13212729b8
1413611b38
15b7d07ec
hex7d30ee6

131272422 has 16 divisors (see below), whose sum is σ = 263997552. Its totient is φ = 43515360.

The previous prime is 131272409. The next prime is 131272451. The reversal of 131272422 is 224272131.

It is a junction number, because it is equal to n+sod(n) for n = 131272392 and 131272401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59353 + ... + 61524.

It is an arithmetic number, because the mean of its divisors is an integer number (16499847).

Almost surely, 2131272422 is an apocalyptic number.

131272422 is an abundant number, since it is smaller than the sum of its proper divisors (132725130).

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

131272422 is a wasteful number, since it uses less digits than its factorization.

131272422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121063.

The product of its digits is 1344, while the sum is 24.

The square root of 131272422 is about 11457.4177719065. The cubic root of 131272422 is about 508.2271159839.

The spelling of 131272422 in words is "one hundred thirty-one million, two hundred seventy-two thousand, four hundred twenty-two".

Divisors: 1 2 3 6 181 362 543 1086 120877 241754 362631 725262 21878737 43757474 65636211 131272422