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131013320 = 2353479439
BaseRepresentation
bin1111100111100…
…01101011001000
3100010112011111012
413303301223020
5232014411240
621000023052
73150411014
oct763615310
9303464435
10131013320
1167a54279
1237a61a88
13211b1a99
1413585544
15b77db65
hex7cf1ac8

131013320 has 32 divisors (see below), whose sum is σ = 295660800. Its totient is φ = 52248768.

The previous prime is 131013317. The next prime is 131013331. The reversal of 131013320 is 23310131.

It is a junction number, because it is equal to n+sod(n) for n = 131013295 and 131013304.

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, 9161 + ... + 18599.

It is an arithmetic number, because the mean of its divisors is an integer number (9239400).

Almost surely, 2131013320 is an apocalyptic number.

131013320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131013320 is an abundant number, since it is smaller than the sum of its proper divisors (164647480).

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

131013320 is a wasteful number, since it uses less digits than its factorization.

131013320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9797 (or 9793 counting only the distinct ones).

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

The square root of 131013320 is about 11446.1050143706. The cubic root of 131013320 is about 507.8925207136.

Adding to 131013320 its reverse (23310131), we get a palindrome (154323451).

The spelling of 131013320 in words is "one hundred thirty-one million, thirteen thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 347 694 1388 1735 2776 3470 6940 9439 13880 18878 37756 47195 75512 94390 188780 377560 3275333 6550666 13101332 16376665 26202664 32753330 65506660 131013320