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131012051 = 461284191
BaseRepresentation
bin1111100111100…
…01010111010011
3100010112002202012
413303301113103
5232014341201
621000013135
73150404222
oct763612723
9303462665
10131012051
1167a53325
1237a611ab
13211b1331
1413584cb9
15b77d5bb
hex7cf15d3

131012051 has 4 divisors (see below), whose sum is σ = 131296704. Its totient is φ = 130727400.

The previous prime is 131012041. The next prime is 131012093. The reversal of 131012051 is 150210131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150210131 = 1071403833.

It is a cyclic number.

It is not a de Polignac number, because 131012051 - 26 = 131011987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131012041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141635 + ... + 142556.

It is an arithmetic number, because the mean of its divisors is an integer number (32824176).

Almost surely, 2131012051 is an apocalyptic number.

131012051 is a deficient number, since it is larger than the sum of its proper divisors (284653).

131012051 is an equidigital number, since it uses as much as digits as its factorization.

131012051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284652.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 131012051 is about 11446.0495805321. The cubic root of 131012051 is about 507.8908808862.

Adding to 131012051 its reverse (150210131), we get a palindrome (281222182).

The spelling of 131012051 in words is "one hundred thirty-one million, twelve thousand, fifty-one".

Divisors: 1 461 284191 131012051