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31244433041 = 52159970121
BaseRepresentation
bin11101000110010100…
…000011011010010001
32222122110220122120202
4131012110003122101
51002442033324131
622204204344545
72154160204343
oct350624033221
988573818522
1031244433041
1112283738a98
12607b845155
132c3c145b03
141725823293
15c2cedebcb
hex746503691

31244433041 has 4 divisors (see below), whose sum is σ = 31304403684. Its totient is φ = 31184462400.

The previous prime is 31244433023. The next prime is 31244433043. The reversal of 31244433041 is 14033444213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14033444213 = 19738602327.

It can be written as a sum of positive squares in 2 ways, for example, as 11286937600 + 19957495441 = 106240^2 + 141271^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-31244433041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31244432995 and 31244433013.

It is not an unprimeable number, because it can be changed into a prime (31244433043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29984540 + ... + 29985581.

It is an arithmetic number, because the mean of its divisors is an integer number (7826100921).

Almost surely, 231244433041 is an apocalyptic number.

It is an amenable number.

31244433041 is a deficient number, since it is larger than the sum of its proper divisors (59970643).

31244433041 is an equidigital number, since it uses as much as digits as its factorization.

31244433041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59970642.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 31244433041 its reverse (14033444213), we get a palindrome (45277877254).

The spelling of 31244433041 in words is "thirty-one billion, two hundred forty-four million, four hundred thirty-three thousand, forty-one".

Divisors: 1 521 59970121 31244433041