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131222323302020 = 2256561116165101
BaseRepresentation
bin11101110101100010010011…
…111101111000111010000100
3122012121201202022221122012222
4131311202103331320322010
5114144421304231131040
61143030411512231512
736432333333303626
oct3565422375707204
9565551668848188
10131222323302020
11388a20905aa555
121287392269b598
13582b29a98b032
1424592a1384c16
1510285d8e75bb5
hex775893f78e84

131222323302020 has 12 divisors (see below), whose sum is σ = 275566878934284. Its totient is φ = 52488929320800.

The previous prime is 131222323302011. The next prime is 131222323302043. The reversal of 131222323302020 is 20203323222131.

It can be written as a sum of positive squares in 2 ways, for example, as 72333766265476 + 58888557036544 = 8504926^2 + 7673888^2 .

It is a super-2 number, since 2×1312223233020202 (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3280558082531 + ... + 3280558082570.

It is an arithmetic number, because the mean of its divisors is an integer number (22963906577857).

Almost surely, 2131222323302020 is an apocalyptic number.

131222323302020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131222323302020 is an abundant number, since it is smaller than the sum of its proper divisors (144344555632264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131222323302020 is a wasteful number, since it uses less digits than its factorization.

131222323302020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6561116165110 (or 6561116165108 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 131222323302020 its reverse (20203323222131), we get a palindrome (151425646524151).

The spelling of 131222323302020 in words is "one hundred thirty-one trillion, two hundred twenty-two billion, three hundred twenty-three million, three hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 6561116165101 13122232330202 26244464660404 32805580825505 65611161651010 131222323302020