Search a number
-
+
212431103011 = 1916766949607
BaseRepresentation
bin1100010111010111100…
…0010110010000100011
3202022022200121011000001
43011311320112100203
511440024330244021
6241331155440431
721230145403561
oct3056570262043
9668280534001
10212431103011
1182100901956
12352068b6117
131705589532a
14a3d307ca31
1557d499e091
hex3175e16423

212431103011 has 8 divisors (see below), whose sum is σ = 224950682880. Its totient is φ = 200045422728.

The previous prime is 212431103009. The next prime is 212431103051. The reversal of 212431103011 is 110301134212.

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 212431103011 - 21 = 212431103009 is a prime.

It is a super-2 number, since 2×2124311030112 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212431103011.

It is not an unprimeable number, because it can be changed into a prime (212431103051) 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, 33471631 + ... + 33477976.

It is an arithmetic number, because the mean of its divisors is an integer number (28118835360).

Almost surely, 2212431103011 is an apocalyptic number.

212431103011 is a deficient number, since it is larger than the sum of its proper divisors (12519579869).

212431103011 is a wasteful number, since it uses less digits than its factorization.

212431103011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66949793.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212431103011 its reverse (110301134212), we get a palindrome (322732237223).

The spelling of 212431103011 in words is "two hundred twelve billion, four hundred thirty-one million, one hundred three thousand, eleven".

Divisors: 1 19 167 3173 66949607 1272042533 11180584369 212431103011