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230032211031 = 3272521614991
BaseRepresentation
bin1101011000111011111…
…1001111110001010111
3210222202100012002002200
43112032333033301113
512232101221223111
6253401512335543
722422261350400
oct3261677176127
9728670162080
10230032211031
1189613205917
12386b93a45b3
13188cc28174c
14b1c29129a7
155eb4d12256
hex358efcfc57

230032211031 has 18 divisors (see below), whose sum is σ = 386516709072. Its totient is φ = 131446977480.

The previous prime is 230032211023. The next prime is 230032211069. The reversal of 230032211031 is 130112230032.

230032211031 is a `hidden beast` number, since 2 + 300 + 322 + 1 + 10 + 31 = 666.

It is not a de Polignac number, because 230032211031 - 23 = 230032211023 is a prime.

It is a super-2 number, since 2×2300322110312 (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 230032210995 and 230032211013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230032212031) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 260807055 + ... + 260807936.

It is an arithmetic number, because the mean of its divisors is an integer number (21473150504).

Almost surely, 2230032211031 is an apocalyptic number.

230032211031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

230032211031 is a deficient number, since it is larger than the sum of its proper divisors (156484498041).

230032211031 is a wasteful number, since it uses less digits than its factorization.

230032211031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521615011 (or 521615001 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 230032211031 its reverse (130112230032), we get a palindrome (360144441063).

The spelling of 230032211031 in words is "two hundred thirty billion, thirty-two million, two hundred eleven thousand, thirty-one".

Divisors: 1 3 7 9 21 49 63 147 441 521614991 1564844973 3651304937 4694534919 10953914811 25559134559 32861744433 76677403677 230032211031