Search a number
-
+
31100211110 = 2513499230389
BaseRepresentation
bin11100111101101101…
…111000111110100110
32222021102112102021202
4130331231320332212
51002143123223420
622142013242502
72150456301263
oct347555707646
988242472252
1031100211110
111220a292a11
12603b493432
132c182baba7
14171060026a
15c20502575
hex73db78fa6

31100211110 has 16 divisors (see below), whose sum is σ = 55984770000. Its totient is φ = 12439108896.

The previous prime is 31100211071. The next prime is 31100211119. The reversal of 31100211110 is 1111200113.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31100211091 and 31100211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31100211119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19796 + ... + 250184.

It is an arithmetic number, because the mean of its divisors is an integer number (3499048125).

Almost surely, 231100211110 is an apocalyptic number.

31100211110 is a deficient number, since it is larger than the sum of its proper divisors (24884558890).

31100211110 is a wasteful number, since it uses less digits than its factorization.

31100211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243895.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 31100211110 its reverse (1111200113), we get a palindrome (32211411223).

The spelling of 31100211110 in words is "thirty-one billion, one hundred million, two hundred eleven thousand, one hundred ten".

Divisors: 1 2 5 10 13499 26998 67495 134990 230389 460778 1151945 2303890 3110021111 6220042222 15550105555 31100211110