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131222131033 = 764129244959
BaseRepresentation
bin111101000110101110…
…0101101000101011001
3110112201002120221020011
41322031130231011121
54122220331143113
6140141013401521
712323543465410
oct1721534550531
9415632527204
10131222131033
1150718521284
12215220392a1
13c4b31473a6
1464cb91a477
1536302c163d
hex1e8d72d159

131222131033 has 8 divisors (see below), whose sum is σ = 150202114560. Its totient is φ = 112300638720.

The previous prime is 131222131013. The next prime is 131222131037. The reversal of 131222131033 is 330131222131.

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 131222131033 - 221 = 131220033881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131222130995 and 131222131013.

It is not an unprimeable number, because it can be changed into a prime (131222131037) 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, 14617993 + ... + 14626966.

It is an arithmetic number, because the mean of its divisors is an integer number (18775264320).

Almost surely, 2131222131033 is an apocalyptic number.

It is an amenable number.

131222131033 is a deficient number, since it is larger than the sum of its proper divisors (18979983527).

131222131033 is an equidigital number, since it uses as much as digits as its factorization.

131222131033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29245607.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131222131033 its reverse (330131222131), we get a palindrome (461353353164).

The spelling of 131222131033 in words is "one hundred thirty-one billion, two hundred twenty-two million, one hundred thirty-one thousand, thirty-three".

Divisors: 1 7 641 4487 29244959 204714713 18746018719 131222131033