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20370463431 = 319151536899
BaseRepresentation
bin10010111110001011…
…001001101011000111
31221120122121202112120
4102332023021223013
5313204314312211
613205201421023
71320541040133
oct227613115307
957518552476
1020370463431
11870366074a
123b4603a773
131bc8377176
14db359c3c3
157e3547d06
hex4be2c9ac7

20370463431 has 16 divisors (see below), whose sum is σ = 27312076800. Its totient is φ = 13504628480.

The previous prime is 20370463409. The next prime is 20370463439. The reversal of 20370463431 is 13436407302.

It is a cyclic number.

It is not a de Polignac number, because 20370463431 - 210 = 20370462407 is a prime.

It is a super-2 number, since 2×203704634312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20370463392 and 20370463401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20370463439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2949220 + ... + 2956118.

It is an arithmetic number, because the mean of its divisors is an integer number (1707004800).

Almost surely, 220370463431 is an apocalyptic number.

20370463431 is a deficient number, since it is larger than the sum of its proper divisors (6941613369).

20370463431 is a wasteful number, since it uses less digits than its factorization.

20370463431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12246.

The product of its (nonzero) digits is 36288, while the sum is 33.

The spelling of 20370463431 in words is "twenty billion, three hundred seventy million, four hundred sixty-three thousand, four hundred thirty-one".

Divisors: 1 3 191 573 5153 6899 15459 20697 984223 1317709 2952669 3953127 35550547 106651641 6790154477 20370463431