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20831026941 = 3219314391387
BaseRepresentation
bin10011011001101000…
…000011111011111101
31222202202020210220100
4103121220003323331
5320130220330231
613323013111313
71335132543654
oct233150037375
958682223810
1020831026941
11891a63194a
124054328539
131c6c90205a
14101880a19b
1581dbc11e6
hex4d9a03efd

20831026941 has 48 divisors (see below), whose sum is σ = 33455319040. Its totient is φ = 12435806880.

The previous prime is 20831026913. The next prime is 20831026943. The reversal of 20831026941 is 14962013802.

It is not a de Polignac number, because 20831026941 - 26 = 20831026877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20831026896 and 20831026905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20831026943) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 182250 + ... + 273636.

Almost surely, 220831026941 is an apocalyptic number.

It is an amenable number.

20831026941 is a deficient number, since it is larger than the sum of its proper divisors (12624292099).

20831026941 is a wasteful number, since it uses less digits than its factorization.

20831026941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91486 (or 91483 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 20831026941 in words is "twenty billion, eight hundred thirty-one million, twenty-six thousand, nine hundred forty-one".

Divisors: 1 3 9 19 31 43 57 93 129 171 279 387 589 817 1333 1767 2451 3999 5301 7353 11997 25327 75981 91387 227943 274161 822483 1736353 2832997 3929641 5209059 8498991 11788923 15627177 25496973 35366769 53826943 74663179 121818871 161480829 223989537 365456613 484442487 671968611 1096369839 2314558549 6943675647 20831026941