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30231021223 = 133175014941
BaseRepresentation
bin11100001001111010…
…001100011010100111
32220000211222222220201
4130021322030122213
5443403120134343
621515443411331
72120103304054
oct341172143247
986024888821
1030231021223
1111903694767
125a38383b47
132b0a1c1150
14166adc402b
15bbe05e94d
hex709e8c6a7

30231021223 has 8 divisors (see below), whose sum is σ = 33606694016. Its totient is φ = 27005378400.

The previous prime is 30231021217. The next prime is 30231021241. The reversal of 30231021223 is 32212013203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30231021223 - 225 = 30197466791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30231021223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231021523) 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, 37507068 + ... + 37507873.

It is an arithmetic number, because the mean of its divisors is an integer number (4200836752).

Almost surely, 230231021223 is an apocalyptic number.

30231021223 is a deficient number, since it is larger than the sum of its proper divisors (3375672793).

30231021223 is a wasteful number, since it uses less digits than its factorization.

30231021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75014985.

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

Adding to 30231021223 its reverse (32212013203), we get a palindrome (62443034426).

The spelling of 30231021223 in words is "thirty billion, two hundred thirty-one million, twenty-one thousand, two hundred twenty-three".

Divisors: 1 13 31 403 75014941 975194233 2325463171 30231021223