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20102131032 = 23317179275251
BaseRepresentation
bin10010101110001011…
…100010110101011000
31220212221201001200120
4102232023202311120
5312132121143112
613122414233240
71311102203004
oct225613426530
956787631616
1020102131032
118586146635
123a901b5820
131b848b63b9
14d89aad704
157c9be1e8c
hex4ae2e2d58

20102131032 has 64 divisors (see below), whose sum is σ = 53508988800. Its totient is φ = 6271296000.

The previous prime is 20102131003. The next prime is 20102131111. The reversal of 20102131032 is 23013120102.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 64594 + ... + 210657.

It is an arithmetic number, because the mean of its divisors is an integer number (836077950).

Almost surely, 220102131032 is an apocalyptic number.

It is an amenable number.

20102131032 is an abundant number, since it is smaller than the sum of its proper divisors (33406857768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20102131032 is a wasteful number, since it uses less digits than its factorization.

20102131032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275456 (or 275452 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20102131032 its reverse (23013120102), we get a palindrome (43115251134).

The spelling of 20102131032 in words is "twenty billion, one hundred two million, one hundred thirty-one thousand, thirty-two".

Divisors: 1 2 3 4 6 8 12 17 24 34 51 68 102 136 179 204 358 408 537 716 1074 1432 2148 3043 4296 6086 9129 12172 18258 24344 36516 73032 275251 550502 825753 1101004 1651506 2202008 3303012 4679267 6606024 9358534 14037801 18717068 28075602 37434136 49269929 56151204 98539858 112302408 147809787 197079716 295619574 394159432 591239148 837588793 1182478296 1675177586 2512766379 3350355172 5025532758 6700710344 10051065516 20102131032