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131300833 = 199365881
BaseRepresentation
bin1111101001101…
…11110111100001
3100011001202212211
413310313313201
5232103111313
621010122121
73153016156
oct764676741
9304052784
10131300833
1168130294
1237b80341
1321282901
141361c22d
15b7d8e3d
hex7d37de1

131300833 has 4 divisors (see below), whose sum is σ = 131368708. Its totient is φ = 131232960.

The previous prime is 131300803. The next prime is 131300837. The reversal of 131300833 is 338003131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 338003131 = 1249270619.

It can be written as a sum of positive squares in 2 ways, for example, as 85155984 + 46144849 = 9228^2 + 6793^2 .

It is a cyclic number.

It is not a de Polignac number, because 131300833 - 221 = 129203681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131300837) 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, 30948 + ... + 34933.

It is an arithmetic number, because the mean of its divisors is an integer number (32842177).

Almost surely, 2131300833 is an apocalyptic number.

It is an amenable number.

131300833 is a deficient number, since it is larger than the sum of its proper divisors (67875).

131300833 is an equidigital number, since it uses as much as digits as its factorization.

131300833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67874.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 131300833 is about 11458.6575566250. The cubic root of 131300833 is about 508.2637781627.

Adding to 131300833 its reverse (338003131), we get a palindrome (469303964).

The spelling of 131300833 in words is "one hundred thirty-one million, three hundred thousand, eight hundred thirty-three".

Divisors: 1 1993 65881 131300833