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13130311031 = 26349925137
BaseRepresentation
bin11000011101010000…
…01010010101110111
31020220001222220120222
430032220022111313
5203342324423111
610010524044555
7643244542115
oct141650122567
936801886528
1013130311031
11562879a022
12266539375b
131313398c16
148c7baaab5
1551cae27db
hex30ea0a577

13130311031 has 4 divisors (see below), whose sum is σ = 13180236432. Its totient is φ = 13080385632.

The previous prime is 13130311013. The next prime is 13130311037. The reversal of 13130311031 is 13011303131.

13130311031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13130311031 - 210 = 13130310007 is a prime.

It is a super-2 number, since 2×131303110312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13130311037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24962306 + ... + 24962831.

It is an arithmetic number, because the mean of its divisors is an integer number (3295059108).

Almost surely, 213130311031 is an apocalyptic number.

13130311031 is a deficient number, since it is larger than the sum of its proper divisors (49925401).

13130311031 is an equidigital number, since it uses as much as digits as its factorization.

13130311031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49925400.

The product of its (nonzero) digits is 81, while the sum is 17.

Adding to 13130311031 its reverse (13011303131), we get a palindrome (26141614162).

The spelling of 13130311031 in words is "thirteen billion, one hundred thirty million, three hundred eleven thousand, thirty-one".

Divisors: 1 263 49925137 13130311031