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131047383 = 343682461
BaseRepresentation
bin1111100111110…
…01111111010111
3100010120220012210
413303321333113
5232022004013
621000444503
73150612225
oct763717727
9303526183
10131047383
1167a77925
1237a79733
13211c443c
1413593b15
15b788cc3
hex7cf9fd7

131047383 has 4 divisors (see below), whose sum is σ = 174729848. Its totient is φ = 87364920.

The previous prime is 131047381. The next prime is 131047391. The reversal of 131047383 is 383740131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 131047383 - 21 = 131047381 is a prime.

It is a super-2 number, since 2×1310473832 = 34346833182297378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131047383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131047381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21841228 + ... + 21841233.

It is an arithmetic number, because the mean of its divisors is an integer number (43682462).

Almost surely, 2131047383 is an apocalyptic number.

131047383 is a deficient number, since it is larger than the sum of its proper divisors (43682465).

131047383 is an equidigital number, since it uses as much as digits as its factorization.

131047383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43682464.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 131047383 is about 11447.5928910841. The cubic root of 131047383 is about 507.9365336527.

The spelling of 131047383 in words is "one hundred thirty-one million, forty-seven thousand, three hundred eighty-three".

Divisors: 1 3 43682461 131047383