Search a number
-
+
30283231 = 1111712351
BaseRepresentation
bin111001110000…
…1010111011111
32002222112210011
41303201113133
530223030411
63001024051
7515255206
oct163412737
962875704
1030283231
1116104270
12a185027
136373b94
14404423d
1529d2c21
hex1ce15df

30283231 has 8 divisors (see below), whose sum is σ = 33078528. Its totient is φ = 27495000.

The previous prime is 30283219. The next prime is 30283271. The reversal of 30283231 is 13238203.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 30283231 - 25 = 30283199 is a prime.

It is a super-2 number, since 2×302832312 = 1834148159598722, 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 (30283271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11706 + ... + 14056.

It is an arithmetic number, because the mean of its divisors is an integer number (4134816).

Almost surely, 230283231 is an apocalyptic number.

30283231 is a deficient number, since it is larger than the sum of its proper divisors (2795297).

30283231 is a wasteful number, since it uses less digits than its factorization.

30283231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30283231 is about 5503.0201707790. The cubic root of 30283231 is about 311.6980388538.

The spelling of 30283231 in words is "thirty million, two hundred eighty-three thousand, two hundred thirty-one".

Divisors: 1 11 1171 2351 12881 25861 2753021 30283231