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133545331 = 1016172143
BaseRepresentation
bin1111111010110…
…11110101110011
3100022021210202101
413331123311303
5233141422311
621130201231
73211054663
oct775336563
9308253671
10133545331
1169423647
1238883217
132188a40a
1413a441a3
15bacdec1
hex7f5bd73

133545331 has 8 divisors (see below), whose sum is σ = 135149184. Its totient is φ = 131947200.

The previous prime is 133545317. The next prime is 133545341.

133545331 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133545331 - 213 = 133537139 is a prime.

It is a super-2 number, since 2×1335453312 = 35668710863799122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133545331.

It is not an unprimeable number, because it can be changed into a prime (133545341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61246 + ... + 63388.

It is an arithmetic number, because the mean of its divisors is an integer number (16893648).

Almost surely, 2133545331 is an apocalyptic number.

133545331 is a deficient number, since it is larger than the sum of its proper divisors (1603853).

133545331 is a wasteful number, since it uses less digits than its factorization.

133545331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861.

The product of its digits is 8100, while the sum is 28.

The square root of 133545331 is about 11556.1815060166. The cubic root of 133545331 is about 511.1435712406.

The spelling of 133545331 in words is "one hundred thirty-three million, five hundred forty-five thousand, three hundred thirty-one".

Divisors: 1 101 617 2143 62317 216443 1322231 133545331