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131434741 = 470327947
BaseRepresentation
bin1111101010110…
…00100011110101
3100011022120120101
413311120203311
5232121402431
621013034101
73154114444
oct765304365
9304276511
10131434741
1168211959
1238025931
13212cb849
1413654d5b
15b813961
hex7d588f5

131434741 has 4 divisors (see below), whose sum is σ = 131467392. Its totient is φ = 131402092.

The previous prime is 131434739. The next prime is 131434747. The reversal of 131434741 is 147434131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 147434131 = 1311341087.

It is a cyclic number.

It is not a de Polignac number, because 131434741 - 21 = 131434739 is a prime.

It is a super-2 number, since 2×1314347412 = 34550182283474162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131434747) 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, 9271 + ... + 18676.

It is an arithmetic number, because the mean of its divisors is an integer number (32866848).

Almost surely, 2131434741 is an apocalyptic number.

It is an amenable number.

131434741 is a deficient number, since it is larger than the sum of its proper divisors (32651).

131434741 is an equidigital number, since it uses as much as digits as its factorization.

131434741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32650.

The product of its digits is 4032, while the sum is 28.

The square root of 131434741 is about 11464.4991604518. The cubic root of 131434741 is about 508.4365048196.

Adding to 131434741 its reverse (147434131), we get a palindrome (278868872).

The spelling of 131434741 in words is "one hundred thirty-one million, four hundred thirty-four thousand, seven hundred forty-one".

Divisors: 1 4703 27947 131434741