Search a number
BaseRepresentation
bin10111100100100000…
…00100011110111011
31012122220011200000222
423302100010132323
5201403440433111
65451400050255
7625404132062
oct136220043673
935586150028
1012654233531
115403a91a45
122551a6398b
13126886b764
148808811d9
154e0e027db
hex2f24047bb

12654233531 has 2 divisors, whose sum is σ = 12654233532. Its totient is φ = 12654233530.

The previous prime is 12654233503. The next prime is 12654233533. The reversal of 12654233531 is 13533245621.

It is a happy number.

12654233531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12654233531 is a prime.

It is a super-2 number, since 2×126542335312 (a number of 21 digits) contains 22 as substring.

Together with 12654233533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12654233491 and 12654233500.

It is not a weakly prime, because it can be changed into another prime (12654233533) by changing a digit.

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 as a sum of consecutive naturals, namely, 6327116765 + 6327116766.

It is an arithmetic number, because the mean of its divisors is an integer number (6327116766).

Almost surely, 212654233531 is an apocalyptic number.

12654233531 is a deficient number, since it is larger than the sum of its proper divisors (1).

12654233531 is an equidigital number, since it uses as much as digits as its factorization.

12654233531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 35.

The spelling of 12654233531 in words is "twelve billion, six hundred fifty-four million, two hundred thirty-three thousand, five hundred thirty-one".