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131283793 = 2325122741
BaseRepresentation
bin1111101001100…
…11101101010001
3100011000220111201
413310303231101
5232102040133
621005511201
73152615404
oct764635521
9304026451
10131283793
1168119503
1237b72501
1321277c24
1413615d3b
15b7d3d7d
hex7d33b51

131283793 has 8 divisors (see below), whose sum is σ = 137543616. Its totient is φ = 125070000.

The previous prime is 131283767. The next prime is 131283797. The reversal of 131283793 is 397382131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131283793 - 29 = 131283281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131283797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5598 + ... + 17143.

It is an arithmetic number, because the mean of its divisors is an integer number (17192952).

Almost surely, 2131283793 is an apocalyptic number.

It is an amenable number.

131283793 is a deficient number, since it is larger than the sum of its proper divisors (6259823).

131283793 is a wasteful number, since it uses less digits than its factorization.

131283793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23015.

The product of its digits is 27216, while the sum is 37.

The square root of 131283793 is about 11457.9139899024. The cubic root of 131283793 is about 508.2417900071.

The spelling of 131283793 in words is "one hundred thirty-one million, two hundred eighty-three thousand, seven hundred ninety-three".

Divisors: 1 23 251 5773 22741 523043 5707991 131283793