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131690070 = 2335487741
BaseRepresentation
bin1111101100101…
…10111001010110
3100011210112211000
413312112321112
5232203040240
621022324130
73156230031
oct766267126
9304715730
10131690070
1168376776
1238129646
132138ab25
14136c0018
15b864430
hex7d96e56

131690070 has 32 divisors (see below), whose sum is σ = 351174240. Its totient is φ = 35117280.

The previous prime is 131690003. The next prime is 131690081. The reversal of 131690070 is 70096131.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243601 + ... + 244140.

It is an arithmetic number, because the mean of its divisors is an integer number (10974195).

Almost surely, 2131690070 is an apocalyptic number.

131690070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131690070 is an abundant number, since it is smaller than the sum of its proper divisors (219484170).

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

131690070 is a wasteful number, since it uses less digits than its factorization.

131690070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487757 (or 487751 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 131690070 is about 11475.6293945038. The cubic root of 131690070 is about 508.7655264334.

The spelling of 131690070 in words is "one hundred thirty-one million, six hundred ninety thousand, seventy".