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2102300031 = 31353905129
BaseRepresentation
bin111110101001110…
…1000110101111111
312102111211220111010
41331103220311333
513301142100111
6544335330303
7103045153416
oct17523506577
95374756433
102102300031
1198976a147
124a8080993
13276714a20
1415d2c847d
15c486daa6
hex7d4e8d7f

2102300031 has 8 divisors (see below), whose sum is σ = 3018687280. Its totient is φ = 1293723072.

The previous prime is 2102300029. The next prime is 2102300089. The reversal of 2102300031 is 1300032012.

It is a happy number.

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

It is not a de Polignac number, because 2102300031 - 21 = 2102300029 is a prime.

It is a super-2 number, since 2×21023000312 = 8839330840685201922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102300731) 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, 26952526 + ... + 26952603.

It is an arithmetic number, because the mean of its divisors is an integer number (377335910).

Almost surely, 22102300031 is an apocalyptic number.

2102300031 is a deficient number, since it is larger than the sum of its proper divisors (916387249).

2102300031 is a wasteful number, since it uses less digits than its factorization.

2102300031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53905145.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2102300031 is about 45850.8454774827. The cubic root of 2102300031 is about 1281.0465137371.

Adding to 2102300031 its reverse (1300032012), we get a palindrome (3402332043).

The spelling of 2102300031 in words is "two billion, one hundred two million, three hundred thousand, thirty-one".

Divisors: 1 3 13 39 53905129 161715387 700766677 2102300031