Search a number
-
+
232530481 = 1216119121
BaseRepresentation
bin11011101110000…
…10001000110001
3121012112202212001
431313002020301
5434011433411
635023534001
75522322301
oct1567021061
9535482761
10232530481
1110a291657
1265a5a301
1339237001
1422c4d601
1515632dc1
hexddc2231

232530481 has 4 divisors (see below), whose sum is σ = 232561764. Its totient is φ = 232499200.

The previous prime is 232530433. The next prime is 232530491. The reversal of 232530481 is 184035232.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 132710400 + 99820081 = 11520^2 + 9991^2 .

It is a cyclic number.

It is not a de Polignac number, because 232530481 - 225 = 198976049 is a prime.

It is a super-2 number, since 2×2325304812 = 108140849188182722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232530491) 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, 2601 + ... + 21721.

It is an arithmetic number, because the mean of its divisors is an integer number (58140441).

Almost surely, 2232530481 is an apocalyptic number.

It is an amenable number.

232530481 is a deficient number, since it is larger than the sum of its proper divisors (31283).

232530481 is a wasteful number, since it uses less digits than its factorization.

232530481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31282.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 232530481 is about 15248.9501605848. The cubic root of 232530481 is about 614.9313436037.

The spelling of 232530481 in words is "two hundred thirty-two million, five hundred thirty thousand, four hundred eighty-one".

Divisors: 1 12161 19121 232530481