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13031031031 = 89313467783
BaseRepresentation
bin11000010001011010…
…11100000011110111
31020122011011222000221
430020231130003313
5203141420443111
65553020115211
7640630636054
oct141055340367
936564158027
1013031031031
11558774a537
122638095b07
1312c8948065
148b892602b
15514031371
hex308b5c0f7

13031031031 has 8 divisors (see below), whose sum is σ = 13219575840. Its totient is φ = 12843422592.

The previous prime is 13031031011. The next prime is 13031031043. The reversal of 13031031031 is 13013013031.

13031031031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13031031031 is a prime.

It is a super-2 number, since 2×130310310312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13031030996 and 13031031014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031031011) 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 7 ways as a sum of consecutive naturals, for example, 206035 + ... + 261748.

It is an arithmetic number, because the mean of its divisors is an integer number (1652446980).

Almost surely, 213031031031 is an apocalyptic number.

13031031031 is a deficient number, since it is larger than the sum of its proper divisors (188544809).

13031031031 is an equidigital number, since it uses as much as digits as its factorization.

13031031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468185.

The product of its (nonzero) digits is 81, while the sum is 16.

Adding to 13031031031 its reverse (13013013031), we get a palindrome (26044044062).

The spelling of 13031031031 in words is "thirteen billion, thirty-one million, thirty-one thousand, thirty-one".

Divisors: 1 89 313 27857 467783 41632687 146416079 13031031031