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102240304831 = 761239438653
BaseRepresentation
bin101111100110111111…
…1110011111010111111
3100202220022011121201201
41133031333303322333
53133342004223311
6114545112320331
710246416152320
oct1371577637277
9322808147651
10102240304831
113a3a5a942a5
12179940a30a7
1398449b35c2
144d3c7d0447
1529d5c689c1
hex17cdff3ebf

102240304831 has 8 divisors (see below), whose sum is σ = 118761572384. Its totient is φ = 86197914720.

The previous prime is 102240304807. The next prime is 102240304861. The reversal of 102240304831 is 138403042201.

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 102240304831 - 223 = 102231916223 is a prime.

It is a super-2 number, since 2×1022403048312 (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102240304831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102240304861) 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, 119718900 + ... + 119719753.

It is an arithmetic number, because the mean of its divisors is an integer number (14845196548).

Almost surely, 2102240304831 is an apocalyptic number.

102240304831 is a deficient number, since it is larger than the sum of its proper divisors (16521267553).

102240304831 is an equidigital number, since it uses as much as digits as its factorization.

102240304831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239438721.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 102240304831 in words is "one hundred two billion, two hundred forty million, three hundred four thousand, eight hundred thirty-one".

Divisors: 1 7 61 427 239438653 1676070571 14605757833 102240304831