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231656030 = 2523165603
BaseRepresentation
bin11011100111011…
…00101001011110
3121010220100022222
431303230221132
5433300443110
634553105342
75512021004
oct1563545136
9533810288
10231656030
11109844671
12656b8252
1338cbbc98
1422aa2a74
151550dc55
hexdceca5e

231656030 has 8 divisors (see below), whose sum is σ = 416980872. Its totient is φ = 92662408.

The previous prime is 231656017. The next prime is 231656039. The reversal of 231656030 is 30656132.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231656039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11582792 + ... + 11582811.

It is an arithmetic number, because the mean of its divisors is an integer number (52122609).

Almost surely, 2231656030 is an apocalyptic number.

231656030 is a deficient number, since it is larger than the sum of its proper divisors (185324842).

231656030 is a wasteful number, since it uses less digits than its factorization.

231656030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23165610.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 231656030 is about 15220.2506549662. The cubic root of 231656030 is about 614.1595411364.

The spelling of 231656030 in words is "two hundred thirty-one million, six hundred fifty-six thousand, thirty".

Divisors: 1 2 5 10 23165603 46331206 115828015 231656030