Search a number
-
+
31092110844 = 2232591009237
BaseRepresentation
bin11100111101001110…
…111111010111111100
32222020212021212210220
4130331032333113330
51002134040021334
622141123501340
72150330403324
oct347516772774
988225255726
1031092110844
1112205760083
126038827850
132c16712c32
14170d4d2284
15c1e952449
hex73d3bf5fc

31092110844 has 12 divisors (see below), whose sum is σ = 72548258664. Its totient is φ = 10364036944.

The previous prime is 31092110813. The next prime is 31092110851. The reversal of 31092110844 is 44801129013.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1295504607 + ... + 1295504630.

It is an arithmetic number, because the mean of its divisors is an integer number (6045688222).

Almost surely, 231092110844 is an apocalyptic number.

It is an amenable number.

31092110844 is an abundant number, since it is smaller than the sum of its proper divisors (41456147820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31092110844 is a wasteful number, since it uses less digits than its factorization.

31092110844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591009244 (or 2591009242 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

Adding to 31092110844 its reverse (44801129013), we get a palindrome (75893239857).

The spelling of 31092110844 in words is "thirty-one billion, ninety-two million, one hundred ten thousand, eight hundred forty-four".

Divisors: 1 2 3 4 6 12 2591009237 5182018474 7773027711 10364036948 15546055422 31092110844