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23031015252 = 2237274178753
BaseRepresentation
bin10101011100110000…
…010110011101010100
32012110001220210111220
4111130300112131110
5334131414442002
614325202330340
71443505254030
oct253460263524
965401823456
1023031015252
119849453703
1245690599b0
13223062b29b
141186a831c0
158ebdd97bc
hex55cc16754

23031015252 has 24 divisors (see below), whose sum is σ = 61416040896. Its totient is φ = 6580290048.

The previous prime is 23031015229. The next prime is 23031015263. The reversal of 23031015252 is 25251013032.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137089293 + ... + 137089460.

It is an arithmetic number, because the mean of its divisors is an integer number (2559001704).

Almost surely, 223031015252 is an apocalyptic number.

It is an amenable number.

23031015252 is an abundant number, since it is smaller than the sum of its proper divisors (38385025644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23031015252 is a wasteful number, since it uses less digits than its factorization.

23031015252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274178767 (or 274178765 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 23031015252 its reverse (25251013032), we get a palindrome (48282028284).

The spelling of 23031015252 in words is "twenty-three billion, thirty-one million, fifteen thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 274178753 548357506 822536259 1096715012 1645072518 1919251271 3290145036 3838502542 5757753813 7677005084 11515507626 23031015252