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225310500231 = 31971991915759
BaseRepresentation
bin1101000111010110001…
…1010110010110000111
3210112120021110022112220
43101311203112112013
512142413442001411
6251301201543423
722164255436605
oct3216543262607
9715507408486
10225310500231
118760a9a3693
1237800044b73
1318328c8b92b
14ac957b2875
155cda52bb06
hex34758d6587

225310500231 has 16 divisors (see below), whose sum is σ = 303456384000. Its totient is φ = 148693472928.

The previous prime is 225310500203. The next prime is 225310500269. The reversal of 225310500231 is 132005013522.

It is a happy number.

It is not a de Polignac number, because 225310500231 - 210 = 225310499207 is a prime.

It is a super-2 number, since 2×2253105002312 (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225310500281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840271 + ... + 1075488.

It is an arithmetic number, because the mean of its divisors is an integer number (18966024000).

Almost surely, 2225310500231 is an apocalyptic number.

225310500231 is a deficient number, since it is larger than the sum of its proper divisors (78145883769).

225310500231 is a wasteful number, since it uses less digits than its factorization.

225310500231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916158.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 225310500231 its reverse (132005013522), we get a palindrome (357315513753).

The spelling of 225310500231 in words is "two hundred twenty-five billion, three hundred ten million, five hundred thousand, two hundred thirty-one".

Divisors: 1 3 197 199 591 597 39203 117609 1915759 5747277 377404523 381236041 1132213569 1143708123 75103500077 225310500231