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133122031 = 779240727
BaseRepresentation
bin1111110111101…
…00011111101111
3100021111022002121
413323310133233
5233034401111
621113133411
73204342610
oct773643757
9307438077
10133122031
1169164609
12386ba267
132176c843
1413973c07
15ba48871
hex7ef47ef

133122031 has 8 divisors (see below), whose sum is σ = 154065920. Its totient is φ = 112659768.

The previous prime is 133122007. The next prime is 133122049. The reversal of 133122031 is 130221331.

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 133122031 - 215 = 133089263 is a prime.

It is a super-2 number, since 2×1331220312 = 35442950275129922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133121996 and 133122014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133122071) 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, 119811 + ... + 120916.

It is an arithmetic number, because the mean of its divisors is an integer number (19258240).

Almost surely, 2133122031 is an apocalyptic number.

133122031 is a deficient number, since it is larger than the sum of its proper divisors (20943889).

133122031 is an equidigital number, since it uses as much as digits as its factorization.

133122031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240813.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 133122031 is about 11537.8520964693. The cubic root of 133122031 is about 510.6029406236.

Adding to 133122031 its reverse (130221331), we get a palindrome (263343362).

The spelling of 133122031 in words is "one hundred thirty-three million, one hundred twenty-two thousand, thirty-one".

Divisors: 1 7 79 553 240727 1685089 19017433 133122031