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31457434286 = 256572780399
BaseRepresentation
bin11101010011000000…
…100101101010101110
310000012022201020100202
4131103000211222232
51003411100344121
622241253553502
72162354531255
oct352300455256
9100168636322
1031457434286
11123829a0a83
12611b045892
132c74302a55
141745c2b79c
15c41a6640b
hex753025aae

31457434286 has 8 divisors (see below), whose sum is σ = 47194509600. Its totient is φ = 15725931088.

The previous prime is 31457434279. The next prime is 31457434289. The reversal of 31457434286 is 68243475413.

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

It is a self number, because there is not a number n which added to its sum of digits gives 31457434286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31457434289) 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 3 ways as a sum of consecutive naturals, for example, 1378886 + ... + 1401513.

It is an arithmetic number, because the mean of its divisors is an integer number (5899313700).

Almost surely, 231457434286 is an apocalyptic number.

31457434286 is a deficient number, since it is larger than the sum of its proper divisors (15737075314).

31457434286 is a wasteful number, since it uses less digits than its factorization.

31457434286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786058.

The product of its digits is 1935360, while the sum is 47.

The spelling of 31457434286 in words is "thirty-one billion, four hundred fifty-seven million, four hundred thirty-four thousand, two hundred eighty-six".

Divisors: 1 2 5657 11314 2780399 5560798 15728717143 31457434286