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102931085437 = 732140765867
BaseRepresentation
bin101111111011100101…
…0111011100001111101
3100211200102222220120121
41133313022323201331
53141300324213222
6115141430214541
710302504535045
oct1376712734175
9324612886517
10102931085437
113a71aa06a64
1217b474b4451
139924b4551b
144da6448725
152a267195c7
hex17f72bb87d

102931085437 has 8 divisors (see below), whose sum is σ = 104347558656. Its totient is φ = 101514786912.

The previous prime is 102931085407. The next prime is 102931085479. The reversal of 102931085437 is 734580139201.

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 102931085437 - 223 = 102922696829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102931085393 and 102931085402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102931085407) 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, 1529778 + ... + 1595644.

It is an arithmetic number, because the mean of its divisors is an integer number (13043444832).

Almost surely, 2102931085437 is an apocalyptic number.

It is an amenable number.

102931085437 is a deficient number, since it is larger than the sum of its proper divisors (1416473219).

102931085437 is an equidigital number, since it uses as much as digits as its factorization.

102931085437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87347.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 102931085437 in words is "one hundred two billion, nine hundred thirty-one million, eighty-five thousand, four hundred thirty-seven".

Divisors: 1 73 21407 65867 1562711 4808291 1410014869 102931085437