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23131041049 is a prime number
BaseRepresentation
bin10101100010101101…
…111010110100011001
32012201001010122010001
4111202231322310121
5334333021303144
614343134253001
71446131414314
oct254255726431
965631118101
1023131041049
11989a962556
124596657161
13224828074c
14119607d97b
15905a96bd4
hex562b7ad19

23131041049 has 2 divisors, whose sum is σ = 23131041050. Its totient is φ = 23131041048.

The previous prime is 23131040981. The next prime is 23131041083. The reversal of 23131041049 is 94014013132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14246093449 + 8884947600 = 119357^2 + 94260^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131041049 - 27 = 23131040921 is a prime.

It is not a weakly prime, because it can be changed into another prime (23131011049) 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 as a sum of consecutive naturals, namely, 11565520524 + 11565520525.

It is an arithmetic number, because the mean of its divisors is an integer number (11565520525).

Almost surely, 223131041049 is an apocalyptic number.

It is an amenable number.

23131041049 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131041049 is an equidigital number, since it uses as much as digits as its factorization.

23131041049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 23131041049 in words is "twenty-three billion, one hundred thirty-one million, forty-one thousand, forty-nine".