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31423201043 = 132778726243
BaseRepresentation
bin11101010000111101…
…111111111100010011
310000002221022000011212
4131100331333330103
51003323314413133
622234032130335
72161460542013
oct352075777423
9100087260155
1031423201043
111236563a043
12610b6969ab
132c6a1a7cb0
141741479c43
15c3da53148
hex750f7ff13

31423201043 has 8 divisors (see below), whose sum is σ = 33962541648. Its totient is φ = 28901313504.

The previous prime is 31423201037. The next prime is 31423201093. The reversal of 31423201043 is 34010232413.

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 31423201043 - 216 = 31423135507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31423201003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4359521 + ... + 4366722.

It is an arithmetic number, because the mean of its divisors is an integer number (4245317706).

Almost surely, 231423201043 is an apocalyptic number.

31423201043 is a deficient number, since it is larger than the sum of its proper divisors (2539340605).

31423201043 is a wasteful number, since it uses less digits than its factorization.

31423201043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8726533.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31423201043 its reverse (34010232413), we get a palindrome (65433433456).

The spelling of 31423201043 in words is "thirty-one billion, four hundred twenty-three million, two hundred one thousand, forty-three".

Divisors: 1 13 277 3601 8726243 113441159 2417169311 31423201043