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10311103031 = 83124230157
BaseRepresentation
bin10011001101001011…
…01111001000110111
3222121121011022020212
421212211233020313
5132104120244111
64423054420035
7513342633605
oct114645571067
928547138225
1010311103031
114411392359
121bb920161b
13c842a4bc8
146db5c6875
1540536198b
hex26696f237

10311103031 has 4 divisors (see below), whose sum is σ = 10435333272. Its totient is φ = 10186872792.

The previous prime is 10311103009. The next prime is 10311103039. The reversal of 10311103031 is 13030111301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10311103031 - 214 = 10311086647 is a prime.

It is a super-2 number, since 2×103111030312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10311102997 and 10311103015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10311103039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62114996 + ... + 62115161.

It is an arithmetic number, because the mean of its divisors is an integer number (2608833318).

Almost surely, 210311103031 is an apocalyptic number.

10311103031 is a deficient number, since it is larger than the sum of its proper divisors (124230241).

10311103031 is an equidigital number, since it uses as much as digits as its factorization.

10311103031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124230240.

The product of its (nonzero) digits is 27, while the sum is 14.

Adding to 10311103031 its reverse (13030111301), we get a palindrome (23341214332).

The spelling of 10311103031 in words is "ten billion, three hundred eleven million, one hundred three thousand, thirty-one".

Divisors: 1 83 124230157 10311103031