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23131023130 = 2519121742227
BaseRepresentation
bin10101100010101101…
…110110011100011010
32012201001002201112101
4111202231312130122
5334333020220010
614343134034014
71446131311135
oct254255663432
965631081471
1023131023130
11989a950046
12459664890a
132248275547
14119607721c
15905a9173a
hex562b7671a

23131023130 has 16 divisors (see below), whose sum is σ = 43827202080. Its totient is φ = 8765440272.

The previous prime is 23131023107. The next prime is 23131023151. The reversal of 23131023130 is 3132013132.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 23131023098 and 23131023107.

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, 60870924 + ... + 60871303.

It is an arithmetic number, because the mean of its divisors is an integer number (2739200130).

Almost surely, 223131023130 is an apocalyptic number.

23131023130 is a deficient number, since it is larger than the sum of its proper divisors (20696178950).

23131023130 is a wasteful number, since it uses less digits than its factorization.

23131023130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121742253.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 23131023130 its reverse (3132013132), we get a palindrome (26263036262).

The spelling of 23131023130 in words is "twenty-three billion, one hundred thirty-one million, twenty-three thousand, one hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 121742227 243484454 608711135 1217422270 2313102313 4626204626 11565511565 23131023130