Search a number
-
+
30335431 = 74333633
BaseRepresentation
bin111001110111…
…0000111000111
32010002012101111
41303232013013
530231213211
63002105451
7515563330
oct163560707
963065344
1030335431
111613a505
12a1ab287
136391879
144059287
1529e3421
hex1cee1c7

30335431 has 4 divisors (see below), whose sum is σ = 34669072. Its totient is φ = 26001792.

The previous prime is 30335423. The next prime is 30335443. The reversal of 30335431 is 13453303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13453303 = 29463907.

It is a cyclic number.

It is not a de Polignac number, because 30335431 - 23 = 30335423 is a prime.

It is a super-2 number, since 2×303354312 = 1840476747911522, which 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 (30335411) 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, 2166810 + ... + 2166823.

It is an arithmetic number, because the mean of its divisors is an integer number (8667268).

Almost surely, 230335431 is an apocalyptic number.

30335431 is a deficient number, since it is larger than the sum of its proper divisors (4333641).

30335431 is an equidigital number, since it uses as much as digits as its factorization.

30335431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333640.

The product of its (nonzero) digits is 1620, while the sum is 22.

The square root of 30335431 is about 5507.7609788370. The cubic root of 30335431 is about 311.8770300790.

Adding to 30335431 its reverse (13453303), we get a palindrome (43788734).

It can be divided in two parts, 3033 and 5431, that added together give a square (8464 = 922).

The spelling of 30335431 in words is "thirty million, three hundred thirty-five thousand, four hundred thirty-one".

Divisors: 1 7 4333633 30335431