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1230431402213 = 13137216898081
BaseRepresentation
bin10001111001111011011…
…011010011100011100101
311100121221212202111221022
4101321323123103203211
5130124410414332323
62341130303100525
7154616144232206
oct21717333234345
94317855674838
101230431402213
114349064a3a82
1217a570ba1745
138c04c167690
14437a5d8d5ad
152201662c4c8
hex11e7b6d38e5

1230431402213 has 8 divisors (see below), whose sum is σ = 1325176736856. Its totient is φ = 1135699891200.

The previous prime is 1230431402171. The next prime is 1230431402257. The reversal of 1230431402213 is 3122041340321.

It can be written as a sum of positive squares in 4 ways, for example, as 54644672644 + 1175786729569 = 233762^2 + 1084337^2 .

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 1230431402213 - 214 = 1230431385829 is a prime.

It is a super-2 number, since 2×12304314022132 (a number of 25 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 (1230431482213) 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, 3270668 + ... + 3627413.

It is an arithmetic number, because the mean of its divisors is an integer number (165647092107).

Almost surely, 21230431402213 is an apocalyptic number.

1230431402213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1230431402213 is a deficient number, since it is larger than the sum of its proper divisors (94745334643).

1230431402213 is a wasteful number, since it uses less digits than its factorization.

1230431402213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6911815.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1230431402213 its reverse (3122041340321), we get a palindrome (4352472742534).

The spelling of 1230431402213 in words is "one trillion, two hundred thirty billion, four hundred thirty-one million, four hundred two thousand, two hundred thirteen".

Divisors: 1 13 13721 178373 6898081 89675053 94648569401 1230431402213