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10120311131 = 72391760449
BaseRepresentation
bin10010110110011011…
…11011000101011011
3222010022011001222012
421123031323011123
5131211244424011
64352121220135
7505535140160
oct113315730533
928108131865
1010120311131
1143237195a7
121b6533164b
13c538c2ba8
146c0120067
153e3725a8b
hex25b37b15b

10120311131 has 8 divisors (see below), whose sum is σ = 11566744800. Its totient is φ = 8674046208.

The previous prime is 10120311109. The next prime is 10120311161. The reversal of 10120311131 is 13111302101.

It is a happy number.

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 10120311131 - 218 = 10120048987 is a prime.

It is a super-2 number, since 2×101203111312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10120311161) 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, 137195 + ... + 197643.

It is an arithmetic number, because the mean of its divisors is an integer number (1445843100).

Almost surely, 210120311131 is an apocalyptic number.

10120311131 is a deficient number, since it is larger than the sum of its proper divisors (1446433669).

10120311131 is an equidigital number, since it uses as much as digits as its factorization.

10120311131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84373.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 10120311131 its reverse (13111302101), we get a palindrome (23231613232).

The spelling of 10120311131 in words is "ten billion, one hundred twenty million, three hundred eleven thousand, one hundred thirty-one".

Divisors: 1 7 23917 60449 167419 423143 1445758733 10120311131