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31712254811 = 1311097220673
BaseRepresentation
bin11101100010001100…
…101001101101011011
310000212002012110101222
4131202030221231123
51004421314123221
622322435402255
72201600501246
oct354214515533
9100762173358
1031712254811
11124a3817456
12619045338b
132cb5042623
14176ba0025d
15c590ed9ab
hex762329b5b

31712254811 has 8 divisors (see below), whose sum is σ = 31983606864. Its totient is φ = 31441346560.

The previous prime is 31712254759. The next prime is 31712254823. The reversal of 31712254811 is 11845221713.

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 31712254811 - 210 = 31712253787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31712224811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33371 + ... + 254043.

It is an arithmetic number, because the mean of its divisors is an integer number (3997950858).

Almost surely, 231712254811 is an apocalyptic number.

31712254811 is a deficient number, since it is larger than the sum of its proper divisors (271352053).

31712254811 is a wasteful number, since it uses less digits than its factorization.

31712254811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221901.

The product of its digits is 13440, while the sum is 35.

The spelling of 31712254811 in words is "thirty-one billion, seven hundred twelve million, two hundred fifty-four thousand, eight hundred eleven".

Divisors: 1 131 1097 143707 220673 28908163 242078281 31712254811