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10203312131 = 31415979139
BaseRepresentation
bin10011000000010101…
…00011000000000011
3222100002022221221022
421200022203000003
5131344021442011
64404244220055
7510563502455
oct114012430003
928302287838
1010203312131
11436655a471
121b8909a62b
13c67b641cc
146cb1682d5
153eab6d8db
hex2602a3003

10203312131 has 8 divisors (see below), whose sum is σ = 10535116800. Its totient is φ = 9871674120.

The previous prime is 10203312107. The next prime is 10203312139. The reversal of 10203312131 is 13121330201.

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 10203312131 - 214 = 10203295747 is a prime.

It is a super-2 number, since 2×102033121312 (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 (10203312139) 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, 89360 + ... + 168498.

It is an arithmetic number, because the mean of its divisors is an integer number (1316889600).

Almost surely, 210203312131 is an apocalyptic number.

10203312131 is a deficient number, since it is larger than the sum of its proper divisors (331804669).

10203312131 is an equidigital number, since it uses as much as digits as its factorization.

10203312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83329.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 10203312131 its reverse (13121330201), we get a palindrome (23324642332).

The spelling of 10203312131 in words is "ten billion, two hundred three million, three hundred twelve thousand, one hundred thirty-one".

Divisors: 1 31 4159 79139 128929 2453309 329139101 10203312131