Search a number
-
+
210030212131 = 684493068419
BaseRepresentation
bin1100001110011011000…
…1101011010000100011
3202002010100220020212121
43003212301223100203
511420120213242011
6240253032205111
721113513226655
oct3034661532043
9662110806777
10210030212131
1181089641013
1234856839797
1316a6235703c
14a24626a6d5
1556e3cede71
hex30e6c6b423

210030212131 has 4 divisors (see below), whose sum is σ = 210033349000. Its totient is φ = 210027075264.

The previous prime is 210030212101. The next prime is 210030212159. The reversal of 210030212131 is 131212030012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210030212131 - 229 = 209493341219 is a prime.

It is a super-2 number, since 2×2100302121312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210030212101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1465761 + ... + 1602658.

It is an arithmetic number, because the mean of its divisors is an integer number (52508337250).

Almost surely, 2210030212131 is an apocalyptic number.

210030212131 is a deficient number, since it is larger than the sum of its proper divisors (3136869).

210030212131 is an equidigital number, since it uses as much as digits as its factorization.

210030212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136868.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 210030212131 its reverse (131212030012), we get a palindrome (341242242143).

The spelling of 210030212131 in words is "two hundred ten billion, thirty million, two hundred twelve thousand, one hundred thirty-one".

Divisors: 1 68449 3068419 210030212131