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131001030212231 = 762128723598457
BaseRepresentation
bin11101110010010100001101…
…110111101111101010000111
3122011211120120000221220202102
4131302110031313233222013
5114132310102213242411
61142341013101302315
736410340436132634
oct3562241567575207
9564746500856672
10131001030212231
1138817252401893
1212838a63b6499b
13581346210865a
14244c6ab37918b
1510229864acd3b
hex77250ddefa87

131001030212231 has 8 divisors (see below), whose sum is σ = 131023000066224. Its totient is φ = 130979061627840.

The previous prime is 131001030212209. The next prime is 131001030212243. The reversal of 131001030212231 is 132212030100131.

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 a de Polignac number, because none of the positive numbers 2k-131001030212231 is a prime.

It is a super-2 number, since 2×1310010302122312 (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 (131001030262231) 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, 218598755 + ... + 219197211.

It is an arithmetic number, because the mean of its divisors is an integer number (16377875008278).

Almost surely, 2131001030212231 is an apocalyptic number.

131001030212231 is a deficient number, since it is larger than the sum of its proper divisors (21969853993).

131001030212231 is an equidigital number, since it uses as much as digits as its factorization.

131001030212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634801.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 131001030212231 its reverse (132212030100131), we get a palindrome (263213060312362).

The spelling of 131001030212231 in words is "one hundred thirty-one trillion, one billion, thirty million, two hundred twelve thousand, two hundred thirty-one".

Divisors: 1 7621 28723 598457 218897983 4560840797 17189480411 131001030212231