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3133120021 = 71223919709
BaseRepresentation
bin1011101010111111…
…1001111000010101
322002100111222200021
42322233321320111
522404034320041
61234521345141
7140433036463
oct27257717025
98070458607
103133120021
111368623499
127353381b1
133ac153195
1421a179833
151350dbcd1
hexbabf9e15

3133120021 has 8 divisors (see below), whose sum is σ = 3178828800. Its totient is φ = 3087455280.

The previous prime is 3133119991. The next prime is 3133120027. The reversal of 3133120021 is 1200213313.

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 3133120021 - 211 = 3133117973 is a prime.

It is a super-3 number, since 3×31331200213 (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3133119977 and 3133120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3133120027) 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, 149115 + ... + 168823.

It is an arithmetic number, because the mean of its divisors is an integer number (397353600).

Almost surely, 23133120021 is an apocalyptic number.

It is an amenable number.

3133120021 is a deficient number, since it is larger than the sum of its proper divisors (45708779).

3133120021 is a wasteful number, since it uses less digits than its factorization.

3133120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22019.

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

The square root of 3133120021 is about 55974.2799953693. The cubic root of 3133120021 is about 1463.2740717914.

Adding to 3133120021 its reverse (1200213313), we get a palindrome (4333333334).

The spelling of 3133120021 in words is "three billion, one hundred thirty-three million, one hundred twenty thousand, twenty-one".

Divisors: 1 71 2239 19709 158969 1399339 44128451 3133120021