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30969073 = 43720211
BaseRepresentation
bin111011000100…
…0110011110001
32011021101120201
41312020303301
530412002243
63023435201
7524142562
oct166106361
964241521
1030969073
1116532583
12a455b01
1365540c5
144182169
152abb04d
hex1d88cf1

30969073 has 4 divisors (see below), whose sum is σ = 31689328. Its totient is φ = 30248820.

The previous prime is 30969049. The next prime is 30969079. The reversal of 30969073 is 37096903.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37096903 = 371002619.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30969073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30969079) 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, 360063 + ... + 360148.

It is an arithmetic number, because the mean of its divisors is an integer number (7922332).

Almost surely, 230969073 is an apocalyptic number.

It is an amenable number.

30969073 is a deficient number, since it is larger than the sum of its proper divisors (720255).

30969073 is an equidigital number, since it uses as much as digits as its factorization.

30969073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720254.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 30969073 is about 5564.9863431998. The cubic root of 30969073 is about 314.0335643729.

The spelling of 30969073 in words is "thirty million, nine hundred sixty-nine thousand, seventy-three".

Divisors: 1 43 720211 30969073