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1230352481 is a prime number
BaseRepresentation
bin100100101010101…
…1011000001100001
310011202010101022102
41021111123001201
510004432234411
6322030420145
742326552321
oct11125330141
93152111272
101230352481
11581558036
122a4061655
13167b90a27
14b9591281
1573033d3b
hex4955b061

1230352481 has 2 divisors, whose sum is σ = 1230352482. Its totient is φ = 1230352480.

The previous prime is 1230352427. The next prime is 1230352489. The reversal of 1230352481 is 1842530321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1132659025 + 97693456 = 33655^2 + 9884^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230352481 - 210 = 1230351457 is a prime.

It is a super-2 number, since 2×12303524812 = 3027534455005710722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1230352489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615176240 + 615176241.

It is an arithmetic number, because the mean of its divisors is an integer number (615176241).

Almost surely, 21230352481 is an apocalyptic number.

It is an amenable number.

1230352481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230352481 is an equidigital number, since it uses as much as digits as its factorization.

1230352481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1230352481 is about 35076.3806713292. The cubic root of 1230352481 is about 1071.5436075283.

The spelling of 1230352481 in words is "one billion, two hundred thirty million, three hundred fifty-two thousand, four hundred eighty-one".