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103115525413 = 104579860909
BaseRepresentation
bin110000000001000101…
…0100000110100100101
3100212011022001102122211
41200002022200310211
53142140033303123
6115212015323421
710310204334655
oct1400212406445
9325138042584
10103115525413
113a80503149a
1217b99220571
1399541122c4
144dc2b3a365
152a379ed40d
hex18022a0d25

103115525413 has 4 divisors (see below), whose sum is σ = 103125396780. Its totient is φ = 103105654048.

The previous prime is 103115525351. The next prime is 103115525449. The reversal of 103115525413 is 314525511301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97395174724 + 5720350689 = 312082^2 + 75633^2 .

It is a cyclic number.

It is not a de Polignac number, because 103115525413 - 217 = 103115394341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103115525473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4919998 + ... + 4940911.

It is an arithmetic number, because the mean of its divisors is an integer number (25781349195).

Almost surely, 2103115525413 is an apocalyptic number.

It is an amenable number.

103115525413 is a deficient number, since it is larger than the sum of its proper divisors (9871367).

103115525413 is an equidigital number, since it uses as much as digits as its factorization.

103115525413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9871366.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 103115525413 in words is "one hundred three billion, one hundred fifteen million, five hundred twenty-five thousand, four hundred thirteen".

Divisors: 1 10457 9860909 103115525413