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30451223023 = 138167286813
BaseRepresentation
bin11100010111000010…
…001100100111101111
32220121012100101222221
4130113002030213233
5444331003114043
621553351220211
72125416060604
oct342702144757
986535311887
1030451223023
1111a06a15621
125a9a077667
132b439cc680
14168c3446ab
15bd35598ed
hex71708c9ef

30451223023 has 8 divisors (see below), whose sum is σ = 32797754528. Its totient is φ = 28105281504.

The previous prime is 30451223003. The next prime is 30451223029. The reversal of 30451223023 is 32032215403.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30451223023 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 (30451223029) 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, 37236 + ... + 249577.

It is an arithmetic number, because the mean of its divisors is an integer number (4099719316).

Almost surely, 230451223023 is an apocalyptic number.

30451223023 is a deficient number, since it is larger than the sum of its proper divisors (2346531505).

30451223023 is a wasteful number, since it uses less digits than its factorization.

30451223023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294993.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 30451223023 its reverse (32032215403), we get a palindrome (62483438426).

The spelling of 30451223023 in words is "thirty billion, four hundred fifty-one million, two hundred twenty-three thousand, twenty-three".

Divisors: 1 13 8167 106171 286813 3728569 2342401771 30451223023