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131323030 = 2513994477
BaseRepresentation
bin1111101001111…
…01010010010110
3100011002220022221
413310331102112
5232104314110
621010412554
73153140656
oct764752226
9304086287
10131323030
1168145a33
1237b9115a
132128ca47
1413626366
15b7e07da
hex7d3d496

131323030 has 16 divisors (see below), whose sum is σ = 238084560. Its totient is φ = 52150752.

The previous prime is 131323013. The next prime is 131323051. The reversal of 131323030 is 30323131.

It is a junction number, because it is equal to n+sod(n) for n = 131322995 and 131323013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45849 + ... + 48628.

It is an arithmetic number, because the mean of its divisors is an integer number (14880285).

Almost surely, 2131323030 is an apocalyptic number.

131323030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131323030 is a deficient number, since it is larger than the sum of its proper divisors (106761530).

131323030 is a wasteful number, since it uses less digits than its factorization.

131323030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94623.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 131323030 is about 11459.6260846504. The cubic root of 131323030 is about 508.2924179795.

Adding to 131323030 its reverse (30323131), we get a palindrome (161646161).

The spelling of 131323030 in words is "one hundred thirty-one million, three hundred twenty-three thousand, thirty".

Divisors: 1 2 5 10 139 278 695 1390 94477 188954 472385 944770 13132303 26264606 65661515 131323030