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2131203000231 = 3573670117929
BaseRepresentation
bin11111000000110101100…
…110010000011110100111
321112202000012102211200000
4133000311212100132213
5234404200432001411
64311021112352343
7306655124414514
oct37006546203647
97482005384600
102131203000231
11751924595888
122a505b6a56b3
13125c82740b56
1475217a2a30b
153a686770956
hex1f0359907a7

2131203000231 has 48 divisors (see below), whose sum is σ = 3236814540960. Its totient is φ = 1401051686400.

The previous prime is 2131203000211. The next prime is 2131203000257. The reversal of 2131203000231 is 1320003021312.

2131203000231 is a `hidden beast` number, since 2 + 13 + 120 + 300 + 0 + 231 = 666.

It is a de Polignac number, because none of the positive numbers 2k-2131203000231 is a prime.

It is a super-2 number, since 2×21312030002312 (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131203000211) 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, 118860075 + ... + 118878003.

It is an arithmetic number, because the mean of its divisors is an integer number (67433636270).

Almost surely, 22131203000231 is an apocalyptic number.

2131203000231 is a deficient number, since it is larger than the sum of its proper divisors (1105611540729).

2131203000231 is an equidigital number, since it uses as much as digits as its factorization.

2131203000231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24718 (or 24706 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 2131203000231 its reverse (1320003021312), we get a palindrome (3451206021543).

The spelling of 2131203000231 in words is "two trillion, one hundred thirty-one billion, two hundred three million, two hundred thirty-one", and thus it is an aban number.

Divisors: 1 3 9 27 73 81 219 243 657 1971 5913 6701 17739 17929 20103 53787 60309 161361 180927 484083 489173 542781 1308817 1452249 1467519 1628343 3926451 4356747 4402557 11779353 13207671 35338059 39623013 106014177 118869039 120142229 318042531 360426687 1081280061 3243840183 8770382717 9731520549 26311148151 29194561647 78933444453 236800333359 710401000077 2131203000231