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31244242333 = 191931851597
BaseRepresentation
bin11101000110010011…
…010100110110011101
32222122110112221222111
4131012103110312131
51002442011223313
622204200314021
72154155451343
oct350623246635
988573487874
1031244242333
1112283618787
12607b772911
132c3c0aa075
1417257b3993
15c2cea343d
hex7464d4d9d

31244242333 has 8 divisors (see below), whose sum is σ = 32905746720. Its totient is φ = 29584445040.

The previous prime is 31244242313. The next prime is 31244242339. The reversal of 31244242333 is 33324244213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31244242333 - 213 = 31244234141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31244242295 and 31244242304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31244242339) 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 in 7 ways as a sum of consecutive naturals, for example, 389110 + ... + 462487.

It is an arithmetic number, because the mean of its divisors is an integer number (4113218340).

Almost surely, 231244242333 is an apocalyptic number.

It is an amenable number.

31244242333 is a deficient number, since it is larger than the sum of its proper divisors (1661504387).

31244242333 is a wasteful number, since it uses less digits than its factorization.

31244242333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853547.

The product of its digits is 41472, while the sum is 31.

Adding to 31244242333 its reverse (33324244213), we get a palindrome (64568486546).

The spelling of 31244242333 in words is "thirty-one billion, two hundred forty-four million, two hundred forty-two thousand, three hundred thirty-three".

Divisors: 1 19 1931 36689 851597 16180343 1644433807 31244242333