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31268486481 = 320035203609
BaseRepresentation
bin11101000111101111…
…110011110101010001
32222201011011200200220
4131013233303311101
51003014213031411
622210424103253
72154601515111
oct350757636521
988634150626
1031268486481
1112296277771
126087904b29
132c4411820b
141728ac5041
15c30191b06
hex747bf3d51

31268486481 has 8 divisors (see below), whose sum is σ = 41712137760. Its totient is φ = 20835246432.

The previous prime is 31268486471. The next prime is 31268486503. The reversal of 31268486481 is 18468486213.

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

It is not a de Polignac number, because 31268486481 - 213 = 31268478289 is a prime.

It is a super-2 number, since 2×312684864812 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31268486411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2595796 + ... + 2607813.

It is an arithmetic number, because the mean of its divisors is an integer number (5214017220).

Almost surely, 231268486481 is an apocalyptic number.

It is an amenable number.

31268486481 is a deficient number, since it is larger than the sum of its proper divisors (10443651279).

31268486481 is a wasteful number, since it uses less digits than its factorization.

31268486481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205615.

The product of its digits is 1769472, while the sum is 51.

The spelling of 31268486481 in words is "thirty-one billion, two hundred sixty-eight million, four hundred eighty-six thousand, four hundred eighty-one".

Divisors: 1 3 2003 6009 5203609 15610827 10422828827 31268486481