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31244014423 = 313172331771
BaseRepresentation
bin11101000110010010…
…011101001101010111
32222122110010101100101
4131012102131031113
51002441431430143
622204151354531
72154153512026
oct350622351527
988573111311
1031244014423
1112283482526
12607b682a47
132c3c02a3cb
1417257548bd
15c2ce5ab4d
hex74649d357

31244014423 has 8 divisors (see below), whose sum is σ = 32253917696. Its totient is φ = 30234238200.

The previous prime is 31244014397. The next prime is 31244014463. The reversal of 31244014423 is 32441044213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-31244014423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31244014391 and 31244014400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31244014463) 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, 967528 + ... + 999298.

It is an arithmetic number, because the mean of its divisors is an integer number (4031739712).

Almost surely, 231244014423 is an apocalyptic number.

31244014423 is a deficient number, since it is larger than the sum of its proper divisors (1009903273).

31244014423 is a wasteful number, since it uses less digits than its factorization.

31244014423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63525.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 31244014423 its reverse (32441044213), we get a palindrome (63685058636).

The spelling of 31244014423 in words is "thirty-one billion, two hundred forty-four million, fourteen thousand, four hundred twenty-three".

Divisors: 1 31 31723 31771 983413 984901 1007871433 31244014423