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31450323415 = 57318338381
BaseRepresentation
bin11101010010100101…
…011101100111010111
310000011211022222002011
4131102211131213113
51003402240322130
622240441325051
72162240224000
oct352245354727
9100154288064
1031450323415
1112379984525
126118796787
132c729b3234
141744cda1a7
15c4110e52a
hex75295d9d7

31450323415 has 16 divisors (see below), whose sum is σ = 44012116800. Its totient is φ = 21565934880.

The previous prime is 31450323413. The next prime is 31450323427. The reversal of 31450323415 is 51432305413.

It is not a de Polignac number, because 31450323415 - 21 = 31450323413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31450323413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9167476 + ... + 9170905.

It is an arithmetic number, because the mean of its divisors is an integer number (2750757300).

Almost surely, 231450323415 is an apocalyptic number.

31450323415 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

31450323415 is a deficient number, since it is larger than the sum of its proper divisors (12561793385).

31450323415 is an equidigital number, since it uses as much as digits as its factorization.

31450323415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18338407 (or 18338393 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 31450323415 its reverse (51432305413), we get a palindrome (82882628828).

The spelling of 31450323415 in words is "thirty-one billion, four hundred fifty million, three hundred twenty-three thousand, four hundred fifteen".

Divisors: 1 5 7 35 49 245 343 1715 18338381 91691905 128368667 641843335 898580669 4492903345 6290064683 31450323415