Search a number
-
+
12313021213210 = 251231302121321
BaseRepresentation
bin1011001100101101100101…
…0000010110101000011010
31121121010001121201022001111
42303023121100112220122
53103214031412310320
642104305053010534
72410405100303524
oct263133120265032
947533047638044
1012313021213210
113a17a17525333
12146a419a83a4a
136b4161109883
14307d4c20ca14
15165453821a5a
hexb32d9416a1a

12313021213210 has 8 divisors (see below), whose sum is σ = 22163438183796. Its totient is φ = 4925208485280.

The previous prime is 12313021213189. The next prime is 12313021213291. The reversal of 12313021213210 is 1231212031321.

It can be written as a sum of positive squares in 2 ways, for example, as 12107804059129 + 205217154081 = 3479627^2 + 453009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×123130212132102 (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615651060651 + ... + 615651060670.

Almost surely, 212313021213210 is an apocalyptic number.

12313021213210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12313021213210 is a deficient number, since it is larger than the sum of its proper divisors (9850416970586).

12313021213210 is a wasteful number, since it uses less digits than its factorization.

12313021213210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231302121328.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12313021213210 its reverse (1231212031321), we get a palindrome (13544233244531).

The spelling of 12313021213210 in words is "twelve trillion, three hundred thirteen billion, twenty-one million, two hundred thirteen thousand, two hundred ten".

Divisors: 1 2 5 10 1231302121321 2462604242642 6156510606605 12313021213210