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20203213102 = 2157229280967
BaseRepresentation
bin10010110100001101…
…001001000100101110
31221010222220120012221
4102310031021010232
5312334010304402
613140424545554
71313440322632
oct226415110456
957128816187
1020203213102
118628207036
123aba0222ba
131b9c818587
14d992a2dc2
157d3a0c337
hex4b434912e

20203213102 has 16 divisors (see below), whose sum is σ = 30631131360. Its totient is φ = 9993398688.

The previous prime is 20203213091. The next prime is 20203213141. The reversal of 20203213102 is 20131230202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68578 + ... + 212389.

It is an arithmetic number, because the mean of its divisors is an integer number (1914445710).

Almost surely, 220203213102 is an apocalyptic number.

20203213102 is a deficient number, since it is larger than the sum of its proper divisors (10427918258).

20203213102 is a wasteful number, since it uses less digits than its factorization.

20203213102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281355.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20203213102 its reverse (20131230202), we get a palindrome (40334443304).

The spelling of 20203213102 in words is "twenty billion, two hundred three million, two hundred thirteen thousand, one hundred two".

Divisors: 1 2 157 229 314 458 35953 71906 280967 561934 44111819 64341443 88223638 128682886 10101606551 20203213102