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23131232030 = 257433113221
BaseRepresentation
bin10101100010101110…
…101001011100011110
32012201001111100002102
4111202232221130132
5334333043411110
614343142325102
71446133141154
oct254256513436
965631440072
1023131232030
11989aa82a95
124596729792
13224831965a
1411960cd3d4
15905ad35a5
hex562ba971e

23131232030 has 16 divisors (see below), whose sum is σ = 41692269024. Its totient is φ = 9240036960.

The previous prime is 23131232027. The next prime is 23131232077. The reversal of 23131232030 is 3023213132.

It is a junction number, because it is equal to n+sod(n) for n = 23131231993 and 23131232011.

It is a congruent number.

It is an unprimeable number.

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, 1549181 + ... + 1564040.

It is an arithmetic number, because the mean of its divisors is an integer number (2605766814).

Almost surely, 223131232030 is an apocalyptic number.

23131232030 is a deficient number, since it is larger than the sum of its proper divisors (18561036994).

23131232030 is a wasteful number, since it uses less digits than its factorization.

23131232030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113971.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23131232030 its reverse (3023213132), we get a palindrome (26154445162).

The spelling of 23131232030 in words is "twenty-three billion, one hundred thirty-one million, two hundred thirty-two thousand, thirty".

Divisors: 1 2 5 10 743 1486 3715 7430 3113221 6226442 15566105 31132210 2313123203 4626246406 11565616015 23131232030