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131100053 = 718728579
BaseRepresentation
bin1111101000001…
…10110110010101
3100010200120110112
413310012312111
5232030200203
621001532405
73151221620
oct764066625
9303616415
10131100053
1168003457
1237aa4105
13212123c6
14135a8db7
15b7996d8
hex7d06d95

131100053 has 4 divisors (see below), whose sum is σ = 149828640. Its totient is φ = 112371468.

The previous prime is 131100049. The next prime is 131100089. The reversal of 131100053 is 350001131.

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: 350001131 = 2693129967.

It is a cyclic number.

It is not a de Polignac number, because 131100053 - 22 = 131100049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131100353) 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, 9364283 + ... + 9364296.

It is an arithmetic number, because the mean of its divisors is an integer number (37457160).

Almost surely, 2131100053 is an apocalyptic number.

It is an amenable number.

131100053 is a deficient number, since it is larger than the sum of its proper divisors (18728587).

131100053 is an equidigital number, since it uses as much as digits as its factorization.

131100053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18728586.

The product of its (nonzero) digits is 45, while the sum is 14.

The square root of 131100053 is about 11449.8931436062. The cubic root of 131100053 is about 508.0045737596.

Adding to 131100053 its reverse (350001131), we get a palindrome (481101184).

The spelling of 131100053 in words is "one hundred thirty-one million, one hundred thousand, fifty-three".

Divisors: 1 7 18728579 131100053