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3130211021 = 72811591363
BaseRepresentation
bin1011101010010011…
…0011101011001101
322002011001012021112
42322210303223031
522402313223041
61234335141405
7140366232440
oct27244635315
98064035245
103130211021
111366a16963
12734374865
133ab675092
14219a1d657
15134c14deb
hexba933acd

3130211021 has 8 divisors (see below), whose sum is σ = 3590117184. Its totient is φ = 2673488160.

The previous prime is 3130210999. The next prime is 3130211027. The reversal of 3130211021 is 1201120313.

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

It is not a de Polignac number, because 3130211021 - 222 = 3126016717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3130210987 and 3130211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130211027) 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, 793715 + ... + 797648.

It is an arithmetic number, because the mean of its divisors is an integer number (448764648).

Almost surely, 23130211021 is an apocalyptic number.

It is an amenable number.

3130211021 is a deficient number, since it is larger than the sum of its proper divisors (459906163).

3130211021 is a wasteful number, since it uses less digits than its factorization.

3130211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591651.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 3130211021 is about 55948.2888120807. The cubic root of 3130211021 is about 1462.8210641060.

Adding to 3130211021 its reverse (1201120313), we get a palindrome (4331331334).

The spelling of 3130211021 in words is "three billion, one hundred thirty million, two hundred eleven thousand, twenty-one".

Divisors: 1 7 281 1967 1591363 11139541 447173003 3130211021