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230305236431 = 572234024697
BaseRepresentation
bin1101011001111101000…
…0110000010111001111
3211000110100221012112112
43112133100300113033
512233131120031211
6253444544254235
722432115131664
oct3263720602717
9730410835475
10230305236431
1189743335946
123877491137b
13189439c663a
14b20aca3a6b
155ecdc9388b
hex359f4305cf

230305236431 has 4 divisors (see below), whose sum is σ = 230309318352. Its totient is φ = 230301154512.

The previous prime is 230305236377. The next prime is 230305236437. The reversal of 230305236431 is 134632503032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 230305236431 - 230 = 229231494607 is a prime.

It is a super-2 number, since 2×2303052364312 (a number of 24 digits) 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 (230305236437) 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, 1955126 + ... + 2069571.

It is an arithmetic number, because the mean of its divisors is an integer number (57577329588).

Almost surely, 2230305236431 is an apocalyptic number.

230305236431 is a deficient number, since it is larger than the sum of its proper divisors (4081921).

230305236431 is an equidigital number, since it uses as much as digits as its factorization.

230305236431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081920.

The product of its (nonzero) digits is 38880, while the sum is 32.

Adding to 230305236431 its reverse (134632503032), we get a palindrome (364937739463).

The spelling of 230305236431 in words is "two hundred thirty billion, three hundred five million, two hundred thirty-six thousand, four hundred thirty-one".

Divisors: 1 57223 4024697 230305236431