Search a number
351861081 = 311131037963
BaseRepresentation
bin10100111110001…
…111100101011001
3220112002101122220
4110332033211121
51210034023311
654525334253
711501525025
oct2476174531
9815071586
10351861081
11170686490
1299a07389
1357b88330
1434a33385
1520d55206
hex14f8f959

351861081 has 32 divisors (see below), whose sum is σ = 556588032. Its totient is φ = 194909760.

The previous prime is 351861079. The next prime is 351861101. The reversal of 351861081 is 180168153.

It is not a de Polignac number, because 351861081 - 21 = 351861079 is a prime.

It is a super-2 number, since 2×3518610812 = 247612440644977122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (351861281) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 40206 + ... + 48168.

It is an arithmetic number, because the mean of its divisors is an integer number (17393376).

Almost surely, 2351861081 is an apocalyptic number.

It is an amenable number.

351861081 is a deficient number, since it is larger than the sum of its proper divisors (204726951).

351861081 is a wasteful number, since it uses less digits than its factorization.

351861081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8093.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 351861081 is about 18757.9604701577. The cubic root of 351861081 is about 705.9767699076.

The spelling of 351861081 in words is "three hundred fifty-one million, eight hundred sixty-one thousand, eighty-one".