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203231022231 = 385779047461
BaseRepresentation
bin1011110101000110000…
…0110100110010010111
3201102120112000121202110
42331101200310302113
511312204120202411
6233210230042103
720453153120616
oct2752140646227
9642515017673
10203231022231
117920a683006
12334797a9333
131621a830053
149b9d26387d
155446e4e2a6
hex2f51834c97

203231022231 has 8 divisors (see below), whose sum is σ = 271290889584. Its totient is φ = 135329251520.

The previous prime is 203231022167. The next prime is 203231022233. The reversal of 203231022231 is 132220132302.

It is a happy number.

203231022231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 203231022231 - 26 = 203231022167 is a prime.

It is a super-2 number, since 2×2032310222312 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203231022198 and 203231022207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203231022233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39521160 + ... + 39526301.

It is an arithmetic number, because the mean of its divisors is an integer number (33911361198).

Almost surely, 2203231022231 is an apocalyptic number.

203231022231 is a deficient number, since it is larger than the sum of its proper divisors (68059867353).

203231022231 is an equidigital number, since it uses as much as digits as its factorization.

203231022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79048321.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 203231022231 its reverse (132220132302), we get a palindrome (335451154533).

The spelling of 203231022231 in words is "two hundred three billion, two hundred thirty-one million, twenty-two thousand, two hundred thirty-one".

Divisors: 1 3 857 2571 79047461 237142383 67743674077 203231022231