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31421341313 = 59717500917
BaseRepresentation
bin11101010000110110…
…111001111010000001
310000002210210112002222
4131100312321322001
51003322330410223
622233524220425
72161435665035
oct352066717201
9100083715088
1031421341313
111236458987a
12610ab3a715
132c699a666b
1417411141c5
15c3d7d70c8
hex750db9e81

31421341313 has 8 divisors (see below), whose sum is σ = 32403965760. Its totient is φ = 30453718960.

The previous prime is 31421341297. The next prime is 31421341321. The reversal of 31421341313 is 31314312413.

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 31421341313 - 24 = 31421341297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31421341513) 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, 3746270 + ... + 3754647.

It is an arithmetic number, because the mean of its divisors is an integer number (4050495720).

Almost surely, 231421341313 is an apocalyptic number.

It is an amenable number.

31421341313 is a deficient number, since it is larger than the sum of its proper divisors (982624447).

31421341313 is an equidigital number, since it uses as much as digits as its factorization.

31421341313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7501047.

The product of its digits is 2592, while the sum is 26.

Adding to 31421341313 its reverse (31314312413), we get a palindrome (62735653726).

The spelling of 31421341313 in words is "thirty-one billion, four hundred twenty-one million, three hundred forty-one thousand, three hundred thirteen".

Divisors: 1 59 71 4189 7500917 442554103 532565107 31421341313