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131223725263 = 437394129519
BaseRepresentation
bin111101000110110001…
…0110010010011001111
3110112201012120221002201
41322031202302103033
54122221233202023
6140141111502331
712323563155331
oct1721542622317
9415635527081
10131223725263
1150719410024
12215226879a7
13c4b3584c17
1464cbc13451
1536304d8bad
hex1e8d8b24cf

131223725263 has 8 divisors (see below), whose sum is σ = 134457171200. Its totient is φ = 127998539928.

The previous prime is 131223725251. The next prime is 131223725267. The reversal of 131223725263 is 362527322131.

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 131223725263 - 225 = 131190170831 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 (131223725267) 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, 2032983 + ... + 2096536.

It is an arithmetic number, because the mean of its divisors is an integer number (16807146400).

Almost surely, 2131223725263 is an apocalyptic number.

131223725263 is a deficient number, since it is larger than the sum of its proper divisors (3233445937).

131223725263 is an equidigital number, since it uses as much as digits as its factorization.

131223725263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130301.

The product of its digits is 90720, while the sum is 37.

The spelling of 131223725263 in words is "one hundred thirty-one billion, two hundred twenty-three million, seven hundred twenty-five thousand, two hundred sixty-three".

Divisors: 1 43 739 31777 4129519 177569317 3051714541 131223725263