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131207064 = 2338365867
BaseRepresentation
bin1111101001000…
…00111110011000
3100010220000020220
413310200332120
5232042111224
621004120040
73152145612
oct764407630
9303800226
10131207064
116807689a
1237b36020
132124c021
14135d5db2
15b7bb279
hex7d20f98

131207064 has 32 divisors (see below), whose sum is σ = 331974720. Its totient is φ = 43208096.

The previous prime is 131207051. The next prime is 131207099. The reversal of 131207064 is 460702131.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 30942 + ... + 34925.

It is an arithmetic number, because the mean of its divisors is an integer number (10374210).

Almost surely, 2131207064 is an apocalyptic number.

It is an amenable number.

131207064 is an abundant number, since it is smaller than the sum of its proper divisors (200767656).

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

131207064 is a wasteful number, since it uses less digits than its factorization.

131207064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65959 (or 65955 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 131207064 is about 11454.5652034462. The cubic root of 131207064 is about 508.1427564982.

Adding to 131207064 its reverse (460702131), we get a palindrome (591909195).

The spelling of 131207064 in words is "one hundred thirty-one million, two hundred seven thousand, sixty-four".

Divisors: 1 2 3 4 6 8 12 24 83 166 249 332 498 664 996 1992 65867 131734 197601 263468 395202 526936 790404 1580808 5466961 10933922 16400883 21867844 32801766 43735688 65603532 131207064