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31350487441 = 713675141953
BaseRepresentation
bin11101001100101000…
…100111100110010001
32222220212110202212111
4131030220213212101
51003201211044231
622222513425321
72156615514010
oct351450474621
988825422774
1031350487441
1112328595259
1260ab26b241
132c580c92b0
14173594ca77
15c3748d4b1
hex74ca27991

31350487441 has 16 divisors (see below), whose sum is σ = 39161121664. Its totient is φ = 24434555904.

The previous prime is 31350487411. The next prime is 31350487463. The reversal of 31350487441 is 14478405313.

It is a cyclic number.

It is not a de Polignac number, because 31350487441 - 27 = 31350487313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31350487394 and 31350487403.

It is not an unprimeable number, because it can be changed into a prime (31350487411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2564880 + ... + 2577073.

It is an arithmetic number, because the mean of its divisors is an integer number (2447570104).

Almost surely, 231350487441 is an apocalyptic number.

It is an amenable number.

31350487441 is a deficient number, since it is larger than the sum of its proper divisors (7810634223).

31350487441 is a wasteful number, since it uses less digits than its factorization.

31350487441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142040.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 31350487441 in words is "thirty-one billion, three hundred fifty million, four hundred eighty-seven thousand, four hundred forty-one".

Divisors: 1 7 13 67 91 469 871 6097 5141953 35993671 66845389 344510851 467917723 2411575957 4478641063 31350487441