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20312113310 = 259726379621
BaseRepresentation
bin10010111010101100…
…100100000010011110
31221102120211021012222
4102322230210002132
5313044400111220
613155315025342
71316232054146
oct227254440236
957376737188
1020312113310
118683727405
123b2a59b252
131bb9257178
14da992d926
157dd36de25
hex4bab2409e

20312113310 has 32 divisors (see below), whose sum is σ = 37079646912. Its totient is φ = 8010408960.

The previous prime is 20312113273. The next prime is 20312113321. The reversal of 20312113310 is 1331121302.

It is a super-2 number, since 2×203121133102 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215300 + ... + 294920.

It is an arithmetic number, because the mean of its divisors is an integer number (1158738966).

Almost surely, 220312113310 is an apocalyptic number.

20312113310 is a deficient number, since it is larger than the sum of its proper divisors (16767533602).

20312113310 is a wasteful number, since it uses less digits than its factorization.

20312113310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79988.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20312113310 its reverse (1331121302), we get a palindrome (21643234612).

The spelling of 20312113310 in words is "twenty billion, three hundred twelve million, one hundred thirteen thousand, three hundred ten".

Divisors: 1 2 5 10 97 194 263 485 526 970 1315 2630 25511 51022 79621 127555 159242 255110 398105 796210 7723237 15446474 20940323 38616185 41880646 77232370 104701615 209403230 2031211331 4062422662 10156056655 20312113310