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103131242240 = 285136197791
BaseRepresentation
bin110000000001100011…
…0011101111100000000
3100212012101121221002112
41200003012131330000
53142203044222430
6115213340234452
710310455044425
oct1400306357400
9325171557075
10103131242240
113a812996804
1217ba253ba28
139957455cc0
144dc4c6bd4c
152a390a5195
hex180319df00

103131242240 has 72 divisors (see below), whose sum is σ = 266034023808. Its totient is φ = 38079221760.

The previous prime is 103131242113. The next prime is 103131242243. The reversal of 103131242240 is 42242131301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103131242243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3082256 + ... + 3115535.

Almost surely, 2103131242240 is an apocalyptic number.

103131242240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103131242240 is an abundant number, since it is smaller than the sum of its proper divisors (162902781568).

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

103131242240 is an equidigital number, since it uses as much as digits as its factorization.

103131242240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6197825 (or 6197811 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 103131242240 its reverse (42242131301), we get a palindrome (145373373541).

The spelling of 103131242240 in words is "one hundred three billion, one hundred thirty-one million, two hundred forty-two thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 13 16 20 26 32 40 52 64 65 80 104 128 130 160 208 256 260 320 416 520 640 832 1040 1280 1664 2080 3328 4160 8320 16640 6197791 12395582 24791164 30988955 49582328 61977910 80571283 99164656 123955820 161142566 198329312 247911640 322285132 396658624 402856415 495823280 644570264 793317248 805712830 991646560 1289140528 1586634496 1611425660 1983293120 2578281056 3222851320 3966586240 5156562112 6445702640 7933172480 10313124224 12891405280 20626248448 25782810560 51565621120 103131242240