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3131103012 = 2233133892143
BaseRepresentation
bin1011101010100000…
…1101011100100100
322002012201111212020
42322220031130210
522403030244022
61234410223140
7140406636132
oct27250153444
98065644766
103131103012
111367476044
12734724ab0
133ab8c809b
14219bb2752
15134d3e35c
hexbaa0d724

3131103012 has 48 divisors (see below), whose sum is σ = 7351518720. Its totient is φ = 1037207808.

The previous prime is 3131102963. The next prime is 3131103029. The reversal of 3131103012 is 2103011313.

It is a junction number, because it is equal to n+sod(n) for n = 3131102982 and 3131103000.

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, 1460013 + ... + 1462155.

It is an arithmetic number, because the mean of its divisors is an integer number (153156640).

Almost surely, 23131103012 is an apocalyptic number.

It is an amenable number.

3131103012 is an abundant number, since it is smaller than the sum of its proper divisors (4220415708).

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

3131103012 is a wasteful number, since it uses less digits than its factorization.

3131103012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852 (or 2850 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 3131103012 is about 55956.2598106771. The cubic root of 3131103012 is about 1462.9600003516.

Adding to 3131103012 its reverse (2103011313), we get a palindrome (5234114325).

The spelling of 3131103012 in words is "three billion, one hundred thirty-one million, one hundred three thousand, twelve".

Divisors: 1 2 3 4 6 12 313 389 626 778 939 1167 1252 1556 1878 2143 2334 3756 4286 4668 6429 8572 12858 25716 121757 243514 365271 487028 670759 730542 833627 1341518 1461084 1667254 2012277 2500881 2683036 3334508 4024554 5001762 8049108 10003524 260925251 521850502 782775753 1043701004 1565551506 3131103012