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20313100232 = 2319313156153
BaseRepresentation
bin10010111010110000…
…010100111111001000
31221102122200102000122
4102322300110333020
5313100123201412
613155352122412
71316243334365
oct227260247710
957378612018
1020313100232
118684240947
123b2a996408
131bb9511449
14da9b0946c
157dd4b6572
hex4bac14fc8

20313100232 has 16 divisors (see below), whose sum is σ = 38284408140. Its totient is φ = 10103924736.

The previous prime is 20313100211. The next prime is 20313100303. The reversal of 20313100232 is 23200131302.

It can be written as a sum of positive squares in 2 ways, for example, as 19084317316 + 1228782916 = 138146^2 + 35054^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20313100232.

It is an unprimeable number.

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, 6576533 + ... + 6579620.

Almost surely, 220313100232 is an apocalyptic number.

It is an amenable number.

20313100232 is a deficient number, since it is larger than the sum of its proper divisors (17971307908).

20313100232 is a wasteful number, since it uses less digits than its factorization.

20313100232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13156352 (or 13156348 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20313100232 its reverse (23200131302), we get a palindrome (43513231534).

The spelling of 20313100232 in words is "twenty billion, three hundred thirteen million, one hundred thousand, two hundred thirty-two".

Divisors: 1 2 4 8 193 386 772 1544 13156153 26312306 52624612 105249224 2539137529 5078275058 10156550116 20313100232