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131103320 = 23517192799
BaseRepresentation
bin1111101000001…
…11101001011000
3100010200201221112
413310013221120
5232030301240
621001555452
73151234265
oct764075130
9303621845
10131103320
1168005957
1237aa5b88
1321213a3a
14135aa26c
15b79a665
hex7d07a58

131103320 has 32 divisors (see below), whose sum is σ = 312336000. Its totient is φ = 49356288.

The previous prime is 131103311. The next prime is 131103361. The reversal of 131103320 is 23301131.

It is a junction number, because it is equal to n+sod(n) for n = 131103295 and 131103304.

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, 95720 + ... + 97079.

It is an arithmetic number, because the mean of its divisors is an integer number (9760500).

Almost surely, 2131103320 is an apocalyptic number.

131103320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131103320 is an abundant number, since it is smaller than the sum of its proper divisors (181232680).

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

131103320 is a wasteful number, since it uses less digits than its factorization.

131103320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192827 (or 192823 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 131103320 is about 11450.0358078043. The cubic root of 131103320 is about 508.0087935320.

Adding to 131103320 its reverse (23301131), we get a palindrome (154404451).

The spelling of 131103320 in words is "one hundred thirty-one million, one hundred three thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 192799 385598 771196 963995 1542392 1927990 3277583 3855980 6555166 7711960 13110332 16387915 26220664 32775830 65551660 131103320