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30231203193 = 3231281385607
BaseRepresentation
bin11100001001111010…
…111000110101111001
32220000212100020112100
4130021322320311321
5443403142000233
621515451334013
72120104662432
oct341172706571
986025306470
1030231203193
11119037a9454
125a38451309
132b0a255c19
14166b030489
15bbe098813
hex709eb8d79

30231203193 has 24 divisors (see below), whose sum is σ = 45236445696. Its totient is φ = 19434542400.

The previous prime is 30231203159. The next prime is 30231203201. The reversal of 30231203193 is 39130213203.

30231203193 is a `hidden beast` number, since 30 + 2 + 312 + 0 + 319 + 3 = 666.

It is not a de Polignac number, because 30231203193 - 214 = 30231186809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30231201193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114405 + ... + 271202.

It is an arithmetic number, because the mean of its divisors is an integer number (1884851904).

Almost surely, 230231203193 is an apocalyptic number.

It is an amenable number.

30231203193 is a deficient number, since it is larger than the sum of its proper divisors (15005242503).

30231203193 is a wasteful number, since it uses less digits than its factorization.

30231203193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385925 (or 385922 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

Adding to 30231203193 its reverse (39130213203), we get a palindrome (69361416396).

The spelling of 30231203193 in words is "thirty billion, two hundred thirty-one million, two hundred three thousand, one hundred ninety-three".

Divisors: 1 3 9 31 93 279 281 843 2529 8711 26133 78399 385607 1156821 3470463 11953817 35861451 107584353 108355567 325066701 975200103 3359022577 10077067731 30231203193