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1230322231 = 53130717761
BaseRepresentation
bin100100101010101…
…0011101000110111
310011202001211211001
41021111103220313
510004430302411
6322030024131
742326365165
oct11125235067
93152054731
101230322231
11581537336
122a4048047
13167b80028
14b9584235
1573029dc1
hex49553a37

1230322231 has 8 divisors (see below), whose sum is σ = 1254565584. Its totient is φ = 1206117120.

The previous prime is 1230322229. The next prime is 1230322253. The reversal of 1230322231 is 1322230321.

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 1230322231 - 21 = 1230322229 is a prime.

It is a super-2 number, since 2×12303222312 = 3027385584185634722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230322199 and 1230322208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230322201) 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, 60391 + ... + 78151.

It is an arithmetic number, because the mean of its divisors is an integer number (156820698).

Almost surely, 21230322231 is an apocalyptic number.

1230322231 is a deficient number, since it is larger than the sum of its proper divisors (24243353).

1230322231 is a wasteful number, since it uses less digits than its factorization.

1230322231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19121.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1230322231 is about 35075.9494668355. The cubic root of 1230322231 is about 1071.5348256384.

Adding to 1230322231 its reverse (1322230321), we get a palindrome (2552552552).

The spelling of 1230322231 in words is "one billion, two hundred thirty million, three hundred twenty-two thousand, two hundred thirty-one".

Divisors: 1 53 1307 17761 69271 941333 23213627 1230322231