Search a number
-
+
31100000111 = 131782330347
BaseRepresentation
bin11100111101101101…
…000101011101101111
32222021102010200211222
4130331231011131233
51002143100000421
622142004533555
72150454432155
oct347555053557
988242120758
1031100000111
111220a159434
12603b3b12bb
132c18245b3b
1417105873d5
15c204aecab
hex73db4576f

31100000111 has 8 divisors (see below), whose sum is σ = 31342443264. Its totient is φ = 30857633560.

The previous prime is 31100000083. The next prime is 31100000119. The reversal of 31100000111 is 11100000113.

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 31100000111 - 26 = 31100000047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31100000119) 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, 1009640 + ... + 1039986.

It is an arithmetic number, because the mean of its divisors is an integer number (3917805408).

Almost surely, 231100000111 is an apocalyptic number.

31100000111 is a deficient number, since it is larger than the sum of its proper divisors (242443153).

31100000111 is a wasteful number, since it uses less digits than its factorization.

31100000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38301.

The product of its (nonzero) digits is 3, while the sum is 8.

Adding to 31100000111 its reverse (11100000113), we get a palindrome (42200000224).

The spelling of 31100000111 in words is "thirty-one billion, one hundred million, one hundred eleven", and thus it is an aban number.

Divisors: 1 131 7823 30347 1024813 3975457 237404581 31100000111