Search a number
-
+
31130034230 = 256160538431
BaseRepresentation
bin11100111111011111…
…101010000000110110
32222100111122120220202
4130333133222000312
51002223242043410
622145000400502
72151300632201
oct347737520066
988314576822
1031130034230
1112225102519
126049476132
132c215304c9
141714564938
15c22e43ca5
hex73f7ea036

31130034230 has 32 divisors (see below), whose sum is σ = 56968818048. Its totient is φ = 12244406400.

The previous prime is 31130034197. The next prime is 31130034233. The reversal of 31130034230 is 3243003113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130034233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3688115 + ... + 3696545.

It is an arithmetic number, because the mean of its divisors is an integer number (1780275564).

Almost surely, 231130034230 is an apocalyptic number.

31130034230 is a deficient number, since it is larger than the sum of its proper divisors (25838783818).

31130034230 is a wasteful number, since it uses less digits than its factorization.

31130034230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14552.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31130034230 its reverse (3243003113), we get a palindrome (34373037343).

The spelling of 31130034230 in words is "thirty-one billion, one hundred thirty million, thirty-four thousand, two hundred thirty".

Divisors: 1 2 5 10 61 122 305 610 6053 8431 12106 16862 30265 42155 60530 84310 369233 514291 738466 1028582 1846165 2571455 3692330 5142910 51032843 102065686 255164215 510328430 3113003423 6226006846 15565017115 31130034230