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30231212023 = 291042455587
BaseRepresentation
bin11100001001111010…
…111010111111110111
32220000212100200122101
4130021322322333313
5443403142241043
621515451442531
72120105030245
oct341172727767
986025320571
1030231212023
1111903805051
125a38456447
132b0a259c4c
14166b033795
15bbe09b24d
hex709ebaff7

30231212023 has 4 divisors (see below), whose sum is σ = 31273667640. Its totient is φ = 29188756408.

The previous prime is 30231212009. The next prime is 30231212057. The reversal of 30231212023 is 32021213203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30231212023 - 221 = 30229114871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231212623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521227765 + ... + 521227822.

It is an arithmetic number, because the mean of its divisors is an integer number (7818416910).

Almost surely, 230231212023 is an apocalyptic number.

30231212023 is a deficient number, since it is larger than the sum of its proper divisors (1042455617).

30231212023 is a wasteful number, since it uses less digits than its factorization.

30231212023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042455616.

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

Adding to 30231212023 its reverse (32021213203), we get a palindrome (62252425226).

The spelling of 30231212023 in words is "thirty billion, two hundred thirty-one million, two hundred twelve thousand, twenty-three".

Divisors: 1 29 1042455587 30231212023