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120201112031 = 72111317154433
BaseRepresentation
bin110111111110010001…
…0110110100111011111
3102111021000121011100012
41233330202312213133
53432132441041111
6131115234553435
711453460410600
oct1577442664737
9374230534305
10120201112031
1146a82437610
121b36713887b
13b447a70880
145b63d37da7
1531d797e48b
hex1bfc8b69df

120201112031 has 24 divisors (see below), whose sum is σ = 164270859984. Its totient is φ = 86458337280.

The previous prime is 120201111983. The next prime is 120201112049. The reversal of 120201112031 is 130211102021.

It is not a de Polignac number, because 120201112031 - 214 = 120201095647 is a prime.

It is a super-2 number, since 2×1202011120312 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120201111997 and 120201112015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120201112091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8570210 + ... + 8584223.

It is an arithmetic number, because the mean of its divisors is an integer number (6844619166).

Almost surely, 2120201112031 is an apocalyptic number.

120201112031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120201112031 is a deficient number, since it is larger than the sum of its proper divisors (44069747953).

120201112031 is a wasteful number, since it uses less digits than its factorization.

120201112031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17154471 (or 17154464 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 120201112031 its reverse (130211102021), we get a palindrome (250412214052).

It can be divided in two parts, 120201 and 112031, that added together give a palindrome (232232).

The spelling of 120201112031 in words is "one hundred twenty billion, two hundred one million, one hundred twelve thousand, thirty-one".

Divisors: 1 7 11 13 49 77 91 143 539 637 1001 7007 17154433 120081031 188698763 223007629 840567217 1320891341 1561053403 2453083919 9246239387 10927373821 17171587433 120201112031