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3130110021 = 33133657097
BaseRepresentation
bin1011101010010001…
…1011000001000101
322002010212001201210
42322210123001011
522402302010041
61234333042033
7140365332123
oct27244330105
98063761653
103130110021
111366957a95
12734326319
133ab63b10c
142199d4913
15134be5016
hexba91b045

3130110021 has 8 divisors (see below), whose sum is σ = 4308108544. Its totient is φ = 2019425760.

The previous prime is 3130110007. The next prime is 3130110029. The reversal of 3130110021 is 1200110313.

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

It is not a de Polignac number, because 3130110021 - 27 = 3130109893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3130109979 and 3130110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130110029) 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, 16828456 + ... + 16828641.

It is an arithmetic number, because the mean of its divisors is an integer number (538513568).

Almost surely, 23130110021 is an apocalyptic number.

3130110021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3130110021 is a deficient number, since it is larger than the sum of its proper divisors (1177998523).

3130110021 is a wasteful number, since it uses less digits than its factorization.

3130110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33657131.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 3130110021 is about 55947.3861855941. The cubic root of 3130110021 is about 1462.8053307134.

Adding to 3130110021 its reverse (1200110313), we get a palindrome (4330220334).

The spelling of 3130110021 in words is "three billion, one hundred thirty million, one hundred ten thousand, twenty-one".

Divisors: 1 3 31 93 33657097 100971291 1043370007 3130110021