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130331123 = 1386311617
BaseRepresentation
bin1111100010010…
…11000111110011
3100002020111200122
413301023013303
5231331043443
620533240455
73141540056
oct761130763
9302214618
10130331123
116762877a
123779312b
1321003410
1413448a9d
15b696968
hex7c4b1f3

130331123 has 8 divisors (see below), whose sum is σ = 140531328. Its totient is φ = 120155904.

The previous prime is 130331111. The next prime is 130331137. The reversal of 130331123 is 321133031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130331123 - 222 = 126136819 is a prime.

It is a super-2 number, since 2×1303311232 = 33972403244882258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130331923) 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, 5411 + ... + 17027.

It is an arithmetic number, because the mean of its divisors is an integer number (17566416).

Almost surely, 2130331123 is an apocalyptic number.

130331123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

130331123 is a deficient number, since it is larger than the sum of its proper divisors (10200205).

130331123 is a wasteful number, since it uses less digits than its factorization.

130331123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12493.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 130331123 is about 11416.2657204534. The cubic root of 130331123 is about 507.0094403070.

Adding to 130331123 its reverse (321133031), we get a palindrome (451464154).

The spelling of 130331123 in words is "one hundred thirty million, three hundred thirty-one thousand, one hundred twenty-three".

Divisors: 1 13 863 11219 11617 151021 10025471 130331123