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131212233303031 = 1943160602488743
BaseRepresentation
bin11101110101011000111010…
…100011100110001111110111
3122012120202201010211120200201
4131311120322203212033313
5114144240123211144111
61143022022352421331
736431525313602146
oct3565307243461767
9565522633746621
10131212233303031
1138898883004a11
1212871987547847
13582a35044c22a
1424589c52b575d
1510281e823b6c1
hex77563a8e63f7

131212233303031 has 8 divisors (see below), whose sum is σ = 141330190094720. Its totient is φ = 121415481488952.

The previous prime is 131212233303029. The next prime is 131212233303049. The reversal of 131212233303031 is 130303332212131.

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 131212233303031 - 21 = 131212233303029 is a prime.

It is a super-2 number, since 2×1312122333030312 (a number of 29 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 (131212233303331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80301243555 + ... + 80301245188.

It is an arithmetic number, because the mean of its divisors is an integer number (17666273761840).

Almost surely, 2131212233303031 is an apocalyptic number.

131212233303031 is a deficient number, since it is larger than the sum of its proper divisors (10117956791689).

131212233303031 is a wasteful number, since it uses less digits than its factorization.

131212233303031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160602488805.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 131212233303031 its reverse (130303332212131), we get a palindrome (261515565515162).

The spelling of 131212233303031 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred thirty-three million, three hundred three thousand, thirty-one".

Divisors: 1 19 43 817 160602488743 3051447286117 6905907015949 131212233303031