Search a number
-
+
30250313 = 231315231
BaseRepresentation
bin111001101100…
…1010101001001
32002220212121222
41303121111021
530221002223
63000211425
7515060222
oct163312511
962825558
1030250313
1116091565
12a169b75
136361bc2
144036249
1529c80c8
hex1cd9549

30250313 has 4 divisors (see below), whose sum is σ = 31565568. Its totient is φ = 28935060.

The previous prime is 30250309. The next prime is 30250321. The reversal of 30250313 is 31305203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30250313 - 22 = 30250309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30250291 and 30250300.

It is not an unprimeable number, because it can be changed into a prime (30250373) 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 in 3 ways as a sum of consecutive naturals, for example, 657593 + ... + 657638.

It is an arithmetic number, because the mean of its divisors is an integer number (7891392).

Almost surely, 230250313 is an apocalyptic number.

It is an amenable number.

30250313 is a deficient number, since it is larger than the sum of its proper divisors (1315255).

30250313 is a wasteful number, since it uses less digits than its factorization.

30250313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315254.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 30250313 is about 5500.0284544718. The cubic root of 30250313 is about 311.5850588791.

Adding to 30250313 its reverse (31305203), we get a palindrome (61555516).

The spelling of 30250313 in words is "thirty million, two hundred fifty thousand, three hundred thirteen".

Divisors: 1 23 1315231 30250313