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131274036 = 223215592339
BaseRepresentation
bin1111101001100…
…01010100110100
3100011000102010100
413310301110310
5232101232121
621005354100
73152545065
oct764612464
9304012110
10131274036
1168112143
1237b68930
132127365a
141361256c
15b7d1026
hex7d31534

131274036 has 36 divisors (see below), whose sum is σ = 332186400. Its totient is φ = 43711248.

The previous prime is 131274029. The next prime is 131274037. The reversal of 131274036 is 630472131.

131274036 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131274037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54955 + ... + 57293.

It is an arithmetic number, because the mean of its divisors is an integer number (9227400).

Almost surely, 2131274036 is an apocalyptic number.

It is an amenable number.

131274036 is an abundant number, since it is smaller than the sum of its proper divisors (200912364).

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

131274036 is a wasteful number, since it uses less digits than its factorization.

131274036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908 (or 3903 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 131274036 is about 11457.4882064089. The cubic root of 131274036 is about 508.2291988667.

The spelling of 131274036 in words is "one hundred thirty-one million, two hundred seventy-four thousand, thirty-six".

Divisors: 1 2 3 4 6 9 12 18 36 1559 2339 3118 4677 4678 6236 7017 9354 9356 14031 14034 18708 21051 28062 28068 42102 56124 84204 3646501 7293002 10939503 14586004 21879006 32818509 43758012 65637018 131274036