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231420341 = 543142611
BaseRepresentation
bin11011100101100…
…11000110110101
3121010110101000202
431302303012311
5433220422331
634544050245
75510016605
oct1562630665
9533411022
10231420341
111096a3589
1265603985
1338c38919
1422a40c05
15154b3ecb
hexdcb31b5

231420341 has 4 divisors (see below), whose sum is σ = 231468384. Its totient is φ = 231372300.

The previous prime is 231420253. The next prime is 231420401. The reversal of 231420341 is 143024132.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-231420341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231422341) 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, 15875 + ... + 26736.

It is an arithmetic number, because the mean of its divisors is an integer number (57867096).

Almost surely, 2231420341 is an apocalyptic number.

It is an amenable number.

231420341 is a deficient number, since it is larger than the sum of its proper divisors (48043).

231420341 is an equidigital number, since it uses as much as digits as its factorization.

231420341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48042.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 231420341 is about 15212.5060723077. The cubic root of 231420341 is about 613.9511865830.

Adding to 231420341 its reverse (143024132), we get a palindrome (374444473).

The spelling of 231420341 in words is "two hundred thirty-one million, four hundred twenty thousand, three hundred forty-one".

Divisors: 1 5431 42611 231420341